How do you solve x+y=7 and 2x-y=2?

Jan 15, 2017

$x = 3$ $x=3$ , $y = 4$ $y=4$

Given:

${ (x+y=7), (2x-y=2) :}$

Add the two equations to eliminate $y$ and get:

$3x=9$

Divide both sides by $3$ to find:

$x=3$

Then:

$y = 7-x = 7-3=4$

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