4x-18=21-2x

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Solution for 4x-18=21-2x equation: 



4x-18=21-2x

We move all terms to the left:

4x-18-(21-2x)=0

We add all the numbers together, and all the variables

4x-(-2x+21)-18=0

We get rid of parentheses

4x+2x-21-18=0

We add all the numbers together, and all the variables

6x-39=0

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

6x=39

x=39/6

x=6+1/2

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