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