Solve for x
x=60
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2x+20+x-20=180
Combine x and x to get 2x.
3x+20-20=180
Combine 2x and x to get 3x.
3x=180
Subtract 20 from 20 to get 0.
x=\frac{180}{3}
Divide both sides by 3.
x=60
Divide 180 by 3 to get 60.
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