9x-21=5x+11

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Solution for 9x-21=5x+11 equation: 



9x-21=5x+11

We move all terms to the left:

9x-21-(5x+11)=0

We get rid of parentheses

9x-5x-11-21=0

We add all the numbers together, and all the variables

4x-32=0

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

4x=32

x=32/4

x=8

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