7x-8=9x+9

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Solution for 7x-8=9x+9 equation: 



7x-8=9x+9

We move all terms to the left:

7x-8-(9x+9)=0

We get rid of parentheses

7x-9x-9-8=0

We add all the numbers together, and all the variables

-2x-17=0

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

-2x=17

x=17/-2

x=-8+1/2

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