Solve for x
x=27
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3x+15-4x=-12
Subtract 4x from both sides.
-x+15=-12
Combine 3x and -4x to get -x.
-x=-12-15
Subtract 15 from both sides.
-x=-27
Subtract 15 from -12 to get -27.
x=27
Multiply both sides by -1.
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