Solve for x
x=7
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11x-8+21=90
Combine 6x and 5x to get 11x.
11x+13=90
Add -8 and 21 to get 13.
11x=90-13
Subtract 13 from both sides.
11x=77
Subtract 13 from 90 to get 77.
x=\frac{77}{11}
Divide both sides by 11.
x=7
Divide 77 by 11 to get 7.
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