x+9=8x-9

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



x+9=8x-9

We move all terms to the left:

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

We get rid of parentheses

x-8x+9+9=0

We add all the numbers together, and all the variables

-7x+18=0

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

-7x=-18

x=-18/-7

x=2+4/7

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