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3\left(2x-6\right)-2\left(4x+2\right)=120
Multiply both sides of the equation by 6, the least common multiple of 2,-3.
6x-18-2\left(4x+2\right)=120
Use the distributive property to multiply 3 by 2x-6.
6x-18-8x-4=120
Use the distributive property to multiply -2 by 4x+2.
-2x-18-4=120
Combine 6x and -8x to get -2x.
-2x-22=120
Subtract 4 from -18 to get -22.
-2x=120+22
Add 22 to both sides.
-2x=142
Add 120 and 22 to get 142.
x=\frac{142}{-2}
Divide both sides by -2.
x=-71
Divide 142 by -2 to get -71.