9x-21=8x-3

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Solution for 9x-21=8x-3 equation: 



9x-21=8x-3

We move all terms to the left:

9x-21-(8x-3)=0

We get rid of parentheses

9x-8x+3-21=0

We add all the numbers together, and all the variables

x-18=0

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

x=18

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