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  • 14-04-2020
  • Mathematics
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Which property was used to simplify the expression? 3c+9+4c=3c+4c+9

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Аноним Аноним
  • 14-04-2020

Answer:

The change that happened from the first half of the equation to the second half was you moved the 9 and the 4c around.

Commutative property of addition allows you to do that. It's what says that 2+3 is the same thing as 3+2

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