(7x-21)+(4x+21)=

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Solution for (7x-21)+(4x+21)= equation: 



(7x-21)+(4x+21)=

We move all terms to the left:

(7x-21)+(4x+21)-()=0

We add all the numbers together, and all the variables

(7x-21)+(4x+21)=0

We get rid of parentheses

7x+4x-21+21=0

We add all the numbers together, and all the variables

11x=0

x=0/11

x=0

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