Solve for x
x=30
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12x+40-10x=100
Subtract 10x from both sides.
2x+40=100
Combine 12x and -10x to get 2x.
2x=100-40
Subtract 40 from both sides.
2x=60
Subtract 40 from 100 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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