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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