Solve for x
x=3
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12=3x+3
Combine x and 2x to get 3x.
3x+3=12
Swap sides so that all variable terms are on the left hand side.
3x=12-3
Subtract 3 from both sides.
3x=9
Subtract 3 from 12 to get 9.
x=\frac{9}{3}
Divide both sides by 3.
x=3
Divide 9 by 3 to get 3.
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Limits
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