Solve for x
x=220
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5x-2x=660
Multiply both sides of the equation by 10, the least common multiple of 2,5.
3x=660
Combine 5x and -2x to get 3x.
x=\frac{660}{3}
Divide both sides by 3.
x=220
Divide 660 by 3 to get 220.
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