danielaespiritu danielaespiritu
  • 28-09-2016
  • Mathematics
contestada

-18x+9y=72 how do I solve that

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miggz23 miggz23
  • 28-09-2016
This depend on what you are solving for. But lets do this:
Divide the WHOLE equation by 9. By doing this, you simplify the equation and get y by itself. Now you have -2x+y=8. Isolate y. Do this by adding 2x to each side of the equals sign. you now have y=2x + 8.
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