Solve for x
x=8
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4x-3-x=21
Subtract x from both sides.
3x-3=21
Combine 4x and -x to get 3x.
3x=21+3
Add 3 to both sides.
3x=24
Add 21 and 3 to get 24.
x=\frac{24}{3}
Divide both sides by 3.
x=8
Divide 24 by 3 to get 8.
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