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9\left(-x+5\right)+2\left(x-3\right)=18
Multiply both sides of the equation by 3.
9\left(-x\right)+45+2\left(x-3\right)=18
Use the distributive property to multiply 9 by -x+5.
9\left(-x\right)+45+2x-6=18
Use the distributive property to multiply 2 by x-3.
9\left(-x\right)+39+2x=18
Subtract 6 from 45 to get 39.
9\left(-x\right)+2x=18-39
Subtract 39 from both sides.
9\left(-x\right)+2x=-21
Subtract 39 from 18 to get -21.
-9x+2x=-21
Multiply 9 and -1 to get -9.
-7x=-21
Combine -9x and 2x to get -7x.
x=\frac{-21}{-7}
Divide both sides by -7.
x=3
Divide -21 by -7 to get 3.