Solve for x
x=1
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21-9x+12x=24
Add 12x to both sides.
21+3x=24
Combine -9x and 12x to get 3x.
3x=24-21
Subtract 21 from both sides.
3x=3
Subtract 21 from 24 to get 3.
x=\frac{3}{3}
Divide both sides by 3.
x=1
Divide 3 by 3 to get 1.
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