-7a-1=-2a+9

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Solution for -7a-1=-2a+9 equation: 



-7a-1=-2a+9

We move all terms to the left:

-7a-1-(-2a+9)=0

We get rid of parentheses

-7a+2a-9-1=0

We add all the numbers together, and all the variables

-5a-10=0

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

-5a=10

a=10/-5

a=-2

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