xxiiSavaiixx
xxiiSavaiixx xxiiSavaiixx
  • 12-02-2018
  • Mathematics
contestada

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




Best answer I’ll mark as brainliest

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car42 car42
  • 12-02-2018
It’s so that the number of the pieces that you add or subtract is all the same size
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