Solve for x
x=4
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2x+8+x=20
Add x to both sides.
3x+8=20
Combine 2x and x to get 3x.
3x=20-8
Subtract 8 from both sides.
3x=12
Subtract 8 from 20 to get 12.
x=\frac{12}{3}
Divide both sides by 3.
x=4
Divide 12 by 3 to get 4.
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