Solve for x
x=9
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12+2x=30
Add 5 and 7 to get 12.
2x=30-12
Subtract 12 from both sides.
2x=18
Subtract 12 from 30 to get 18.
x=\frac{18}{2}
Divide both sides by 2.
x=9
Divide 18 by 2 to get 9.
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