4x-12+x=15-x

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Solution for 4x-12+x=15-x equation: 



4x-12+x=15-x

We move all terms to the left:

4x-12+x-(15-x)=0

We add all the numbers together, and all the variables

4x+x-(-1x+15)-12=0

We add all the numbers together, and all the variables

5x-(-1x+15)-12=0

We get rid of parentheses

5x+1x-15-12=0

We add all the numbers together, and all the variables

6x-27=0

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

6x=27

x=27/6

x=4+1/2

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