Solve for x
x=4
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1200+30x=1320
Combine -120x and 150x to get 30x.
30x=1320-1200
Subtract 1200 from both sides.
30x=120
Subtract 1200 from 1320 to get 120.
x=\frac{120}{30}
Divide both sides by 30.
x=4
Divide 120 by 30 to get 4.
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