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Q: How do you find out a fraction if it is subtracted by different denominators?

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By finding the lowest common multiple of the fractions with different denomiators that need to be added or subtracted

If its a fraction then we can change the numerators and denominators upside down .This is in case of fraction.

LCM is applied to two or more fraction denominators. For 'A fraction' the denominator is the LCM.

By finding the lowest common multiple of the denominators

You need to find the least common multiple of their denominators.

If the denominators (bottom numbers) are the same (eg. 11/6 - 7/6) you just subtract the numerators (top numbers) eg. 11-7=4 so 4/6. If the denominators are different you have to find equivalent fractions where the denominators are the same.

multiply the nominator and denominator of each fraction by the denominator of the other fraction

Yes, 'fractions' with different numerators can be added, but not with different denominators. In the case where you have different denominators, you must find the LCM (lowest common multiple).

The LCM is essentially the same thing as the lowest common denominator. To find the LCD, find the LCM of the denominators.

first simplify the fraction then multiply the denominators times the numerators and see if they are equal

By finding the lowest common multiple of the denominators.

You don't. You find a common denominator and proceed from there.

No. If the denominators are the same, you subtract the numerators. If the denominators are different you have to find the least common denominator.

By finding the lowest common multiple of the different denominators then rearranging the numerators and denominators accordingly.

the new denominator

Only if the denominators are different.

You need at least two denominators to find something in common between them.

Common denominators are multiples that are being used as denominators. The process to find them is the same.

find the lowest common denominator

First, multiply the numerators and write the product of the numerators above a fraction bar. Next, multiply the denominators and write that product underneath the fraction bar. You don't have to find a common denominator. You do, however, have to reduce your answer to simplest terms.

No

First convert them t top-heavy fractions. Treat these as you would ordinary fractions: find common denominator and so on. At the end, convert the top heave fraction back to a mixed fraction.

To solve an unrelated fraction you must, numerator multiplied by the numerator and denominator multiplied by denominator. When dividing fractions with the different/unrelated denominators, it’s a little bit more complicated. What you have to do is flip (find the inverse) the second fraction then proceed as if your multiplying the fractions.

Step I: Find the LCM of the denominators. Step II: Find equivalent fraction such that the new denominators are the LCM. Step III: Carry out the subtraction on these numerators to arrive at the new numerator. Step IV: New denominator = LCM. Step V: Simplify the fraction.

You change the mixed fraction to an improper fraction . Then you find the denominators GCF. Then you subtract. Another reply: Converting to an improper fraction is not really necessary, but converting to a common denominator is. Example: 3 1/2 - 1 1/3 = 3 3/6 - 1 2/6 = 2 1/6. In other words, you can subtract the integer part and the fraction part separately.