9-4a=-(a-3)

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Solution for 9-4a=-(a-3) equation: 



9-4a=-(a-3)

We move all terms to the left:

9-4a-(-(a-3))=0



We calculate terms in parentheses: -(-(a-3)), so:

-(a-3)

We get rid of parentheses

-a+3

We add all the numbers together, and all the variables

-1a+3

Back to the equation:

-(-1a+3)



We get rid of parentheses

-4a+1a-3+9=0

We add all the numbers together, and all the variables

-3a+6=0

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

-3a=-6

a=-6/-3

a=+2

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