3=-a+1

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Solution for 3=-a+1 equation: 



3=-a+1

We move all terms to the left:

3-(-a+1)=0

We add all the numbers together, and all the variables

-(-1a+1)+3=0

We get rid of parentheses

1a-1+3=0

We add all the numbers together, and all the variables

a+2=0

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

a=-2

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