How do you solve the system of equations $4x - 3y = 9$ and $2x + 3y = 9$ ?

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Answer 1 · 2017-04-19T21:37:19

$x=3$ and $y=1$ or $(3,1)$

Line them up and add them together.
$4x-3y=9$
$2x+3y=9$
$6x=18$
$x=3$
$12-3y=9$
$-3y=-3$
$y=1$

How do you solve the system of equations 4x - 3y = 94x - 3y = 9 and 2x + 3y = 92x + 3y = 9?