9x+20=8x-11

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Solution for 9x+20=8x-11 equation: 



9x+20=8x-11

We move all terms to the left:

9x+20-(8x-11)=0

We get rid of parentheses

9x-8x+11+20=0

We add all the numbers together, and all the variables

x+31=0

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

x=-31

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