8x-9=20+9x

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



8x-9=20+9x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

8x-9x-20-9=0

We add all the numbers together, and all the variables

-1x-29=0

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

-x=29

x=29/-1

x=-29

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