How do you add and subtract fractions with unlike denominator?

Answer 1

STEP ONE: Get a common denominator.

STEP TWO: Add or subtract the numerators.

STEP THREE: Simplify the result if needed. Notice that 3/27 can be simplified, since the numerator and denominator are both divisible by 3.

And that's all there is to it! Final Answer:

Answer 2

Choose a denominator which is a multiple of the two dissimilar denominators. Divide each of the original denominators into the new and multiple each result by each numerator.

e.g.

2/3 + 5/6 The new denominator could be 12 (multiple of 3 and 6).

3 into 12 goes 4. So we have 2 x 4 = 8

Which gives 8/12

And 6 into 12 goes 2. So we have 5 x 2 = 10

Which gives 10/12

Thus 2/3 + 5/6 becomes 8/12 + 10/12 = 18/12 = 1 and 6/12 = 1 1/2 (One and a half)

Answer 3

Convert them to equivalent fractions with like denominators, then proceed.