Solve for x
x=320
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2x+60=\frac{4200}{6}
Divide both sides by 6.
2x+60=700
Divide 4200 by 6 to get 700.
2x=700-60
Subtract 60 from both sides.
2x=640
Subtract 60 from 700 to get 640.
x=\frac{640}{2}
Divide both sides by 2.
x=320
Divide 640 by 2 to get 320.
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