4=8+x+3x

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Solution for 4=8+x+3x equation: 



4=8+x+3x

We move all terms to the left:

4-(8+x+3x)=0

We add all the numbers together, and all the variables

-(4x+8)+4=0

We get rid of parentheses

-4x-8+4=0

We add all the numbers together, and all the variables

-4x-4=0

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

-4x=4

x=4/-4

x=-1

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