Solve for x
x=5
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18x+90=180
Combine 6x and 12x to get 18x.
18x=180-90
Subtract 90 from both sides.
18x=90
Subtract 90 from 180 to get 90.
x=\frac{90}{18}
Divide both sides by 18.
x=5
Divide 90 by 18 to get 5.
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