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How do you solve A system of Equations? -y + 2x = 4 2x - = -4 Thanks!

1 Answer

Jul 29, 2018

$x = - 2$ $x=-2$
$y = - 8$ $y=-8$

Explanation:

Given -

$- y + 2 x = 4$ $-y+2x=4$ ---------------(1)
$2 x = - 4$ $2x=-4$ ---------------(2)

$x = \frac{- 4}{2} = - 2$ $x=(-4)/2=-2$
$x = - 2$ $x=-2$
Substitute $x = - 2$ $x=-2$ in equation (1)

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

$- y - 4 = 4$ $-y-4=4$

$- y = 4 + 4 = 8$ $-y=4+4=8$

$y = - 8$ $y=-8$

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