3=-1-2x

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Solution for 3=-1-2x equation: 



3=-1-2x

We move all terms to the left:

3-(-1-2x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

2x+1+3=0

We add all the numbers together, and all the variables

2x+4=0

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

2x=-4

x=-4/2

x=-2

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