x+2x+3x=-12x=

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Solution for x+2x+3x=-12x= equation: 



x+2x+3x=-12x=

We move all terms to the left:

x+2x+3x-(-12x)=0

We add all the numbers together, and all the variables

6x-(-12x)=0

We get rid of parentheses

6x+12x=0

We add all the numbers together, and all the variables

18x=0

x=0/18

x=0

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