Needhelp02 Needhelp02
  • 29-09-2016
  • Mathematics
contestada

Solve -a+7=2a-8 Show your work.

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clache
clache clache
  • 29-09-2016
-a+7=2a-8
-a+a+7=2a+a-8    add a on both sides
7+8=3a-8+8         add 8 on both sides
15/3=3a/3             divide 3 on both sides
a=5                     solution
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Jove Jove
  • 29-09-2016
1st combine like terms
1a=(-1)
a=(-1) I think thats it

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