3=-x+2x+1

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



3=-x+2x+1

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(x+1)+3=0

We get rid of parentheses

-x-1+3=0

We add all the numbers together, and all the variables

-1x+2=0

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

-x=-2

x=-2/-1

x=+2

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