5x+7x-21=63-2x

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Solution for 5x+7x-21=63-2x equation: 



5x+7x-21=63-2x

We move all terms to the left:

5x+7x-21-(63-2x)=0

We add all the numbers together, and all the variables

5x+7x-(-2x+63)-21=0

We add all the numbers together, and all the variables

12x-(-2x+63)-21=0

We get rid of parentheses

12x+2x-63-21=0

We add all the numbers together, and all the variables

14x-84=0

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

14x=84

x=84/14

x=6

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