Solve for x
x=1
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3x+7-x=9
Subtract x from both sides.
2x+7=9
Combine 3x and -x to get 2x.
2x=9-7
Subtract 7 from both sides.
2x=2
Subtract 7 from 9 to get 2.
x=\frac{2}{2}
Divide both sides by 2.
x=1
Divide 2 by 2 to get 1.
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