Answer
(7,-14)
Work Step by Step
$3x-2y=49$
$y=-2x$
Substitute -2x for y in the first equation.
$3x-2(-2x)=49$ $\longrightarrow$ simplify
$7x=49$ $\longrightarrow$ divide both sides by 7
$7x\div7=49\div7$ $\longrightarrow$ simplify
$x=7$
Substitute 7 for x in the second equation.
$y=-2(7)$ $\longrightarrow$ simplify
$y=-14$
