Solve for x
x=20
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3x+30=90
Combine 2x and x to get 3x.
3x=90-30
Subtract 30 from both sides.
3x=60
Subtract 30 from 90 to get 60.
x=\frac{60}{3}
Divide both sides by 3.
x=20
Divide 60 by 3 to get 20.
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