a+1-3a=-1

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Solution for a+1-3a=-1 equation: 



a+1-3a=-1

We move all terms to the left:

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

We add all the numbers together, and all the variables

-2a+2=0

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

-2a=-2

a=-2/-2

a=1

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