mb897 mb897
  • 22-11-2019
  • Mathematics
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Solve the system of equations by substitution : −5x+2y=9 y=7x

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anne2833
anne2833 anne2833
  • 22-11-2019
Question
-5x+2y=9 y=7x

Answer
-5x+2y=9 y=7x

-5x+2y=7x

9y=7x

Simplify the expression
-12x+2y=0
9y=7x

-12x+2y=0
-7x+9y=0

84x-14y=0
-7x+9y=0

84x-14y=0
-84x+108y=0

94y=0

y=0


-12x+2x0=0

x=0

(x, y)= (0,0)

-5x0+2x0=9x0=7x0

0=0=0

(x, y)=(0,0)

Ur welcome even tho idk if u wanted it like that my back hurts after that lol like I was moving
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