x+x-8=3x

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



x+x-8=3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1x-8=0

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

-x=8

x=8/-1

x=-8

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