(3x-21)=63

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Solution for (3x-21)=63 equation: 



(3x-21)=63

We move all terms to the left:

(3x-21)-(63)=0

We get rid of parentheses

3x-21-63=0

We add all the numbers together, and all the variables

3x-84=0

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

3x=84

x=84/3

x=28

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