a-1+a=2a-1

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



a-1+a=2a-1

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2a-2a+1-1=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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