x+11=9x+21

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Solution for x+11=9x+21 equation: 



x+11=9x+21

We move all terms to the left:

x+11-(9x+21)=0

We get rid of parentheses

x-9x-21+11=0

We add all the numbers together, and all the variables

-8x-10=0

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

-8x=10

x=10/-8

x=-1+1/4

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