8x+72=9x+81

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Solution for 8x+72=9x+81 equation: 



8x+72=9x+81

We move all terms to the left:

8x+72-(9x+81)=0

We get rid of parentheses

8x-9x-81+72=0

We add all the numbers together, and all the variables

-1x-9=0

We move all terms containing x to the left, all other terms to the right

-x=9

x=9/-1

x=-9

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