In general, why is a common denominator necessary to add and subtract fractions?

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asked Dec 15, 2021 192k views

2 Answers

Ultifinitus · Answer 1 · 2021-12-19T08:54:32+0000

Answer:

The denominator of a fraction tells you the relative size of the pieces. ... Therefore, the reason fractions need a common denominator before adding or subtracting is so that the numbers of pieces you are adding/subtracting are all the same size.

Explanation:

In general, why is a common denominator necessary to add and subtract fractions?

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