sara1996 sara1996
  • 30-01-2018
  • Geography
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one side of a square is (3n + 7) what is its perimeter

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Аноним Аноним
  • 30-01-2018
First to subtract by the 3 from the both sides. Then cross out 3 -3 it equals to 0.

 (3n+7)
 -3   -3
~~~~~~
         4
Answer is n=4
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