Solve for x
x=-4
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20+x\times 2=12
Swap sides so that all variable terms are on the left hand side.
x\times 2=12-20
Subtract 20 from both sides.
x\times 2=-8
Subtract 20 from 12 to get -8.
x=\frac{-8}{2}
Divide both sides by 2.
x=-4
Divide -8 by 2 to get -4.
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