breasy breasy
  • 10-07-2017
  • Mathematics
contestada

solve for x and y y+8=-4(x+7)

Respuesta :

koziadam koziadam
  • 10-07-2017
Because you can't solve for two variables at once, you can guess and trial/error.
You can also give x or y any value, and then solve for the opposite variable.

x = 0
y = -36
for example. There are more solutions.

   y + 8 = -4(x+7)
-36 + 8 = -4(0+7)
      -28 = 0 - 28
      -28 = -28
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