-x=2x+3

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Solution for -x=2x+3 equation: 



-x=2x+3

We move all terms to the left:

-x-(2x+3)=0

We add all the numbers together, and all the variables

-1x-(2x+3)=0

We get rid of parentheses

-1x-2x-3=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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