-23=-2a-7+a-3

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Solution for -23=-2a-7+a-3 equation: 



-23=-2a-7+a-3

We move all terms to the left:

-23-(-2a-7+a-3)=0

We add all the numbers together, and all the variables

-(-1a-10)-23=0

We get rid of parentheses

1a+10-23=0

We add all the numbers together, and all the variables

a-13=0

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

a=13

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