How do you solve the following system?: $x +2y =-7 , -2x +2y = 4$

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Answer 1 · 2018-06-06T16:50:01

$x = 11/3$

$y = -5/3$

$x + 2y = -7 " "(1)$

$-2x + 2y = 4 " "(2)$

Subtract equation $(1)$ from $(2)$

$-3x= 11$

$x= -11/3$

Substitute $x = -11/3$ into equation $(1)$

$-11/3 + 2y = -7$

$2y = 11/3 -7$

$2y = -10/3$

$y= -5/3$

How do you solve the following system?: x +2y =-7 , -2x +2y = 4 x +2y =-7 , -2x +2y = 4