JkidA23 JkidA23
  • 17-12-2017
  • Geography
contestada

6x + 9 = 18x -3x + 81

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suspho
suspho suspho
  • 17-12-2017
6x + 9 = 18x - 3x + 81
6x + 18x + 3x = -9 + 81
-9x = 72
x = 72 : (-9)
 = -8
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