Solve for x
x=2
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18x-20+13x=42
Add 13x to both sides.
31x-20=42
Combine 18x and 13x to get 31x.
31x=42+20
Add 20 to both sides.
31x=62
Add 42 and 20 to get 62.
x=\frac{62}{31}
Divide both sides by 31.
x=2
Divide 62 by 31 to get 2.
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