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Svetach [21]
3 years ago
8

Why do fractions need to have a common denominator before you add or subtract them?

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
7 0
It’s so that the number of the pieces that you add or subtract is all the same size
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Step-by-step explanation:

<u>Step 1:  Solve for x</u>

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<em><u>When dividing by negative, it flips the sign</u></em>

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