X+3x=-8x

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Solution for X+3x=-8x equation: 



X+3X=-8X

We move all terms to the left:

X+3X-(-8X)=0

We add all the numbers together, and all the variables

4X-(-8X)=0

We get rid of parentheses

4X+8X=0

We add all the numbers together, and all the variables

12X=0

X=0/12

X=0

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