Solve for x
x=18
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7x+4-5x=40
Subtract 5x from both sides.
2x+4=40
Combine 7x and -5x to get 2x.
2x=40-4
Subtract 4 from both sides.
2x=36
Subtract 4 from 40 to get 36.
x=\frac{36}{2}
Divide both sides by 2.
x=18
Divide 36 by 2 to get 18.
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