Solve for x
x=9
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8x+12+6=90
Combine 5x and 3x to get 8x.
8x+18=90
Add 12 and 6 to get 18.
8x=90-18
Subtract 18 from both sides.
8x=72
Subtract 18 from 90 to get 72.
x=\frac{72}{8}
Divide both sides by 8.
x=9
Divide 72 by 8 to get 9.
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