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-15x+45=2\left(x-17\right)-57
Use the distributive property to multiply -5 by 3x-9.
-15x+45=2x-34-57
Use the distributive property to multiply 2 by x-17.
-15x+45=2x-91
Subtract 57 from -34 to get -91.
-15x+45-2x=-91
Subtract 2x from both sides.
-17x+45=-91
Combine -15x and -2x to get -17x.
-17x=-91-45
Subtract 45 from both sides.
-17x=-136
Subtract 45 from -91 to get -136.
x=\frac{-136}{-17}
Divide both sides by -17.
x=8
Divide -136 by -17 to get 8.