x+15+7x+11=9x+20

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Solution for x+15+7x+11=9x+20 equation: 



x+15+7x+11=9x+20

We move all terms to the left:

x+15+7x+11-(9x+20)=0

We add all the numbers together, and all the variables

8x-(9x+20)+26=0

We get rid of parentheses

8x-9x-20+26=0

We add all the numbers together, and all the variables

-1x+6=0

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

-x=-6

x=-6/-1

x=+6

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