(18x+18)=21x

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Solution for (18x+18)=21x equation: 



(18x+18)=21x

We move all terms to the left:

(18x+18)-(21x)=0

We add all the numbers together, and all the variables

-21x+(18x+18)=0

We get rid of parentheses

-21x+18x+18=0

We add all the numbers together, and all the variables

-3x+18=0

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

-3x=-18

x=-18/-3

x=+6

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