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

1 Answer

Jun 20, 2018

$x=-1, y=-3$

Explanation:

By adding the two equations together you eliminate the $y$ variable

$2x=-2$

$x=-1$

substitute $x=-1$ into $x+y=-4$

$-1+y=-4$

$y=-3$

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