-2a-7+5a=a-1

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Solution for -2a-7+5a=a-1 equation: 



-2a-7+5a=a-1

We move all terms to the left:

-2a-7+5a-(a-1)=0

We add all the numbers together, and all the variables

3a-(a-1)-7=0

We get rid of parentheses

3a-a+1-7=0

We add all the numbers together, and all the variables

2a-6=0

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

2a=6

a=6/2

a=3

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