-2=3x+1=7

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Solution for -2=3x+1=7 equation: 



-2=3x+1=7

We move all terms to the left:

-2-(3x+1)=0

We get rid of parentheses

-3x-1-2=0

We add all the numbers together, and all the variables

-3x-3=0

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

-3x=3

x=3/-3

x=-1

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