jovanidoe jovanidoe
  • 10-06-2015
  • Mathematics
contestada

if 2a-7=9a, then 4a=

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kimeto3
kimeto3 kimeto3
  • 10-06-2015
2a-7=9a
-7=9a-2a
7a=-7
a=-1
4a=4(-1)
    =-4
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