-3x=3+x

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Solution for -3x=3+x equation: 



-3x=3+x

We move all terms to the left:

-3x-(3+x)=0

We add all the numbers together, and all the variables

-3x-(x+3)=0

We get rid of parentheses

-3x-x-3=0

We add all the numbers together, and all the variables

-4x-3=0

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

-4x=3

x=3/-4

x=-3/4

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