(6x+21)=39

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Solution for (6x+21)=39 equation: 



(6x+21)=39

We move all terms to the left:

(6x+21)-(39)=0

We get rid of parentheses

6x+21-39=0

We add all the numbers together, and all the variables

6x-18=0

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

6x=18

x=18/6

x=3

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