a-1=2a-3

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Solution for a-1=2a-3 equation: 



a-1=2a-3

We move all terms to the left:

a-1-(2a-3)=0

We get rid of parentheses

a-2a+3-1=0

We add all the numbers together, and all the variables

-1a+2=0

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

-a=-2

a=-2/-1

a=+2

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