aerriyl aerriyl
  • 25-03-2014
  • Mathematics
Answered

-5x+y=-3
3x-8y=24
solve this for me someone (solving systems of equations by substitutions)
looking for x and y

Answer :

carla carla
  • 25-03-2014
(3)(-5x+y=-3)
(5)(3x-8y=24)

-15x+3y=-9
15x-40y=120

3y=-9
-40y=120

-37y=111
Divide both sides by -37

y=-3

To solve for x. Choose one equation from the given and plug what you get in Y.

I'll choose, -5x+y=-3
So, -5x+(-3)=-3
-5x=0
Divide both sides by -5
x=0/-5

Hope, this helps.
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