Solve for x
x=6
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7x+72-8x=66
Use the distributive property to multiply 8 by 9-x.
-x+72=66
Combine 7x and -8x to get -x.
-x=66-72
Subtract 72 from both sides.
-x=-6
Subtract 72 from 66 to get -6.
x=6
Multiply both sides by -1.
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