2a+(a-1)=23

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Solution for 2a+(a-1)=23 equation: 



2a+(a-1)=23

We move all terms to the left:

2a+(a-1)-(23)=0

We get rid of parentheses

2a+a-1-23=0

We add all the numbers together, and all the variables

3a-24=0

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

3a=24

a=24/3

a=8

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