Solve for x
x=20
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x+40+x=80
Add x to both sides.
2x+40=80
Combine x and x to get 2x.
2x=80-40
Subtract 40 from both sides.
2x=40
Subtract 40 from 80 to get 40.
x=\frac{40}{2}
Divide both sides by 2.
x=20
Divide 40 by 2 to get 20.
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