Best Answer

Never.

You could write a fraction as a mixed fraction if you like and then the mixed fraction would have a different denominator (e.g.: 23/2 = 11 1/2)

Q: When you add or subtract two like fractions when does the final answer have a different denominator?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

Answer: When adding or subtracting fractions with different denominators it is important to change the denominators into the lowest common denominator by using equivalent fractions. Answer: Equivalent fractions are used to: * Simplify fractions. It is sort of inelegant to write the final solution of a problem as 123/246, when you can just as well write it as 1/2. * Add fractions. If two fractions have different denominators, you need to convert them to equivalent fractions that have the same denominator. Only then can you add. * Subtract fractions (same as addition). * Compare fractions, to check which one is larger (same as addition).

Make the denominators the same using equivalent fractionsAdd or subtract the numerators.Change the result to a mixed fraction if the numerator is larger thanthe denominator.Simplify the final result if possible.

In order to add or subtract fractions, both fractions must have the same denominator. In order to make both the denominators equal each other, we will multiply each fraction by the opposite fraction's denominator over itself:(3/25 x 89/89) - (2/89 x 25/25) = 267/2225 - 50/2225Now we can subtract the numerators and we end up with 217/2225 to get our final answer we can divide 217 by 2225 and get our answer 0.1 or 1/10.Note: 0.1 is rounded from 0.097 because 0.097 was too precise for our purposes.

In adding or subtracting dissimilar fractions, you will need first to get its LCD or least common denominator. For example: 3/2 + 5/3 = ? We will get the LCD of two and three and we will get 6 So the equation will become: 9/6 + 10/6 Then the final answer will be : 19/6

Unfortunately, there is no "easy" way to add and subtract fractions, really-you always have to find a common denominator. If you can't be bothered finding one right away, it may at least be a bit easier to save this step for the end. For example, instead of finding a common denominator before adding 4 / 13 and 22 / 42, start by simply multiplying the fractions by 42 / 42 and 13 / 13, respectively. This gives us 168/546 + 286/546 = 454/546. You can see that these are divisible by 2, so we have 227 / 273. (Note that this is a somewhat situational example, in that the fraction cannot be reduced from 546 if some numbers are added, e.g. 546 is not divisible by 5, so 5/546 could be a final answer.)

Related questions

turn the whole number into an inproper fraction by doing this: multiply it by the denominator of the fraction.that answer is your numerator make the fractions denominator the whole number's denominator.then subtract just the numerators.you should have an improper fraction as your final answer, so turn that into a mixed number.

1) Convert the fractions to equivalent fractions, to ensure they have the same denominator. 2) Once they have the same denominator, just add or subtract the numerators. 3) As with most problems with fractions, check whether you can simplify the final result.

Answer: When adding or subtracting fractions with different denominators it is important to change the denominators into the lowest common denominator by using equivalent fractions. Answer: Equivalent fractions are used to: * Simplify fractions. It is sort of inelegant to write the final solution of a problem as 123/246, when you can just as well write it as 1/2. * Add fractions. If two fractions have different denominators, you need to convert them to equivalent fractions that have the same denominator. Only then can you add. * Subtract fractions (same as addition). * Compare fractions, to check which one is larger (same as addition).

3a4 / 3a6 You can rewrite the denominator like 3a-6 because that is a charateristic of fractions. You also can cancel out the 3's because they are both in the numerator and denominator. Therefore you have a4 * a-6 At this point you just subtract the numbers.. or techinally you can add the opposite which is the same as subtracting. a(4-6) = a-2 Remember the a number or varaible to the negative power means it is suppose to go in the denominator. Therefore your final answer is this... 1/a2

First you find a common multiple of the denominators. The least common denominator is handy but not essential. This number will be the denominator of the answer - before simplification.For both fractions find an equivalent fraction whose denominator is this common denominator.Carry out the subtraction on the new numerators to give the numerator of the answer.Simplify the result for the final, simplified answer.First you find a common multiple of the denominators. The least common denominator is handy but not essential. This number will be the denominator of the answer - before simplification.For both fractions find an equivalent fraction whose denominator is this common denominator.Carry out the subtraction on the new numerators to give the numerator of the answer.Simplify the result for the final, simplified answer.First you find a common multiple of the denominators. The least common denominator is handy but not essential. This number will be the denominator of the answer - before simplification.For both fractions find an equivalent fraction whose denominator is this common denominator.Carry out the subtraction on the new numerators to give the numerator of the answer.Simplify the result for the final, simplified answer.First you find a common multiple of the denominators. The least common denominator is handy but not essential. This number will be the denominator of the answer - before simplification.For both fractions find an equivalent fraction whose denominator is this common denominator.Carry out the subtraction on the new numerators to give the numerator of the answer.Simplify the result for the final, simplified answer.

You multiply or divide numerator and denominator by the same number. For example, 1/2 = 3/6 (multiplying numerator and denominator by 3). You often need to do this to (a) convert fractions to a common denominator, and (b) simplify fractions (it is awkward if you present a final result as 113/226, and later find out that this is really equivalent to 1/2).

Make the denominators the same using equivalent fractionsAdd or subtract the numerators.Change the result to a mixed fraction if the numerator is larger thanthe denominator.Simplify the final result if possible.

In order to add or subtract fractions, both fractions must have the same denominator. In order to make both the denominators equal each other, we will multiply each fraction by the opposite fraction's denominator over itself:(3/25 x 89/89) - (2/89 x 25/25) = 267/2225 - 50/2225Now we can subtract the numerators and we end up with 217/2225 to get our final answer we can divide 217 by 2225 and get our answer 0.1 or 1/10.Note: 0.1 is rounded from 0.097 because 0.097 was too precise for our purposes.

In adding or subtracting dissimilar fractions, you will need first to get its LCD or least common denominator. For example: 3/2 + 5/3 = ? We will get the LCD of two and three and we will get 6 So the equation will become: 9/6 + 10/6 Then the final answer will be : 19/6

Unfortunately, there is no "easy" way to add and subtract fractions, really-you always have to find a common denominator. If you can't be bothered finding one right away, it may at least be a bit easier to save this step for the end. For example, instead of finding a common denominator before adding 4 / 13 and 22 / 42, start by simply multiplying the fractions by 42 / 42 and 13 / 13, respectively. This gives us 168/546 + 286/546 = 454/546. You can see that these are divisible by 2, so we have 227 / 273. (Note that this is a somewhat situational example, in that the fraction cannot be reduced from 546 if some numbers are added, e.g. 546 is not divisible by 5, so 5/546 could be a final answer.)

Take for example 1/2 and 1/3. Since those denominators are different, one must change them so they do have "common denominators". Most often, the easiest way of doing this is to simply multiply the two denominators, and perform the same function on the top numbers (the numerators). So 2 times 3 is six, so 6 will now be the denominator of both fractions. As you changed the 2 into a 6 by multiplying by 3, you must multiply the 1 above it by 3. This gives you the final first fraction of 3/6. The three in the second fraction was multiplied by 2 to get 6, so you must multiply it's top number by 2. This gives you a final fraction of 2/6 for the second fraction. Now you are dealing with the fractions 3/6 and 2/6, and you can easily add and subtract them.

To subtract fractions, you need a common denominator. In this case, the common denominator is 48. So, 15/16 minus 5/24 equals (153)/(163) - (52)/(242) which simplifies to 45/48 - 10/48. Lastly, 45 minus 10 equals 35, so the final answer is 35/48.