Solve using systems of equations. -3x-4y=-8 3x+3y=9

1 answer:

8 0

Sure thing!

$-3x-4y=-8\\
 3x+3y=9\\
----------\\
0x-1y=1\\
y=-1\\

$

since y = -1 we can just plug it into the first equation
$-3x-4(-1)=-8\\
-3x+4=-8\\
-3x=-12\\
x=4$

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$\sf \: GK \: = KJ \\\sf 2x + 10 = 3x - 15 \\\sf 2x - 3x = - 15 - 10 \\ \sf - x = - 25 \\ \sf \: - > \boxed{\bf \: x = 25}$

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