Solve for x
x=3
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-3+7x-x=15
Subtract x from both sides.
-3+6x=15
Combine 7x and -x to get 6x.
6x=15+3
Add 3 to both sides.
6x=18
Add 15 and 3 to get 18.
x=\frac{18}{6}
Divide both sides by 6.
x=3
Divide 18 by 6 to get 3.
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