Solve for x
x=23
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12+9x-81=6x
Use the distributive property to multiply 9 by x-9.
-69+9x=6x
Subtract 81 from 12 to get -69.
-69+9x-6x=0
Subtract 6x from both sides.
-69+3x=0
Combine 9x and -6x to get 3x.
3x=69
Add 69 to both sides. Anything plus zero gives itself.
x=\frac{69}{3}
Divide both sides by 3.
x=23
Divide 69 by 3 to get 23.
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