x-9=8x-20

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Solution for x-9=8x-20 equation: 



x-9=8x-20

We move all terms to the left:

x-9-(8x-20)=0

We get rid of parentheses

x-8x+20-9=0

We add all the numbers together, and all the variables

-7x+11=0

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

-7x=-11

x=-11/-7

x=1+4/7

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