-a-6a=-9+2a

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Solution for -a-6a=-9+2a equation: 



-a-6a=-9+2a

We move all terms to the left:

-a-6a-(-9+2a)=0

We add all the numbers together, and all the variables

-a-6a-(2a-9)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-7a-2a+9=0

We add all the numbers together, and all the variables

-9a+9=0

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

-9a=-9

a=-9/-9

a=1

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