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Why do fractions need a common denominator when you add or subtract them?

Why do fractions need a common denominator when you add or subtract them?
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4 votes
Why do fractions need a common denominator when you add or subtract them?

asked
User Kali
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1 Answer

3 votes

Answer:

Because they need numbers that will equal each other so they're even.

Explanation:

answered
User Giulio Genovese
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