Solve for x
x=6
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-x-5+3x=7
Add 3x to both sides.
-x+3x=7+5
Add 5 to both sides.
-x+3x=12
Add 7 and 5 to get 12.
2x=12
Combine -x and 3x to get 2x.
x=\frac{12}{2}
Divide both sides by 2.
x=6
Divide 12 by 2 to get 6.
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