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Do you add and subtract like and unlike fractions in the same way?
no, to add and subtract like and unlike fractions the denominator has to be the same,
How do you add and subtract by fractions?
If the fractions have the same denominator, add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible. If the fractions have different denominators, find the LCM of the denominators and convert the fractions to equivalent fractions with like denominators. Then add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible.
How do you add or subtract fractions when negative?
The same as with positive ones. Make sure they have the same denominator and add or subtract their numerators.
How do you add and subtract mixed numbers with unlike denominators?
just change the fration with the smallest denominator and add or subtract the way you always do.
Why do fractions need to have a common denominator before add or subtract them?
because it would be diffcult to understand.[you don't add or subtract the demonters]
Do you add and subtract like and unlike fractions in the same way?
no, to add and subtract like and unlike fractions the denominator has to be the same,
How do you add and subtract fractions with the same denominator?
it stay the same when you subtract fractions and when you add fractions.
How do you add and subtract similar fraction?
Just simply add/subtract the numerators then copy the denominator.
What you need to add or subtract fractions?
You need a common denominator in order to add or subtract fractions.
How do you add and subtract by fractions?
If the fractions have the same denominator, add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible. If the fractions have different denominators, find the LCM of the denominators and convert the fractions to equivalent fractions with like denominators. Then add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible.
Why do you think it is important to know how to find the common denominator of two rational polynomials?
You need to find the common denominator in order to add or subtract them. You can only add or subtract "like things" and by finding a common denominator you make both rational expressions into things that can be added or subtracted.
How do you add or subtract fractions when negative?
The same as with positive ones. Make sure they have the same denominator and add or subtract their numerators.
Why do you need to have a common denominator before you subtract or add them?
Because addition and subtraction are defined in terms of like terms.
How do you add and subtract mixed numbers with unlike denominators?
just change the fration with the smallest denominator and add or subtract the way you always do.
Why do fractions need to have a common denominator before add or subtract them?
because it would be diffcult to understand.[you don't add or subtract the demonters]
Why do you need a common denominator with fractions?
You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.
How do you add and subtract like fractions?
Assuming that these "like" fractions have common denominators, to add or subtract them, simply add or subtract their numerators (numbers on top of the fraction), then put that answer over the like denominator. Example: 5/7 + 1/7 = 6/7 Example: 3/8 - 2/8 = 1/8
