Solve for x
x=12
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5x-30-x=18
Subtract x from both sides.
4x-30=18
Combine 5x and -x to get 4x.
4x=18+30
Add 30 to both sides.
4x=48
Add 18 and 30 to get 48.
x=\frac{48}{4}
Divide both sides by 4.
x=12
Divide 48 by 4 to get 12.
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