Solve for x
x=4
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3x+9-9x=-15
Subtract 9x from both sides.
-6x+9=-15
Combine 3x and -9x to get -6x.
-6x=-15-9
Subtract 9 from both sides.
-6x=-24
Subtract 9 from -15 to get -24.
x=\frac{-24}{-6}
Divide both sides by -6.
x=4
Divide -24 by -6 to get 4.
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