Solve for x
x=9
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70+11x+11=180
Add 31 and 39 to get 70.
81+11x=180
Add 70 and 11 to get 81.
11x=180-81
Subtract 81 from both sides.
11x=99
Subtract 81 from 180 to get 99.
x=\frac{99}{11}
Divide both sides by 11.
x=9
Divide 99 by 11 to get 9.
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