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30-x=2x-6x+3
Multiply both sides of the equation by 2.
30-x=-4x+3
Combine 2x and -6x to get -4x.
30-x+4x=3
Add 4x to both sides.
30+3x=3
Combine -x and 4x to get 3x.
3x=3-30
Subtract 30 from both sides.
3x=-27
Subtract 30 from 3 to get -27.
x=\frac{-27}{3}
Divide both sides by 3.
x=-9
Divide -27 by 3 to get -9.