-3+8x-21=7x+7

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Solution for -3+8x-21=7x+7 equation: 



-3+8x-21=7x+7

We move all terms to the left:

-3+8x-21-(7x+7)=0

We add all the numbers together, and all the variables

8x-(7x+7)-24=0

We get rid of parentheses

8x-7x-7-24=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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