(-a)-9=-5(a-6)+a

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Solution for (-a)-9=-5(a-6)+a equation: 



(-a)-9=-5(a-6)+a

We move all terms to the left:

(-a)-9-(-5(a-6)+a)=0

We add all the numbers together, and all the variables

(-1a)-(-5(a-6)+a)-9=0

We get rid of parentheses

-1a-(-5(a-6)+a)-9=0



We calculate terms in parentheses: -(-5(a-6)+a), so:

-5(a-6)+a

We add all the numbers together, and all the variables

a-5(a-6)

We multiply parentheses

a-5a+30

We add all the numbers together, and all the variables

-4a+30

Back to the equation:

-(-4a+30)



We get rid of parentheses

-1a+4a-30-9=0

We add all the numbers together, and all the variables

3a-39=0

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

3a=39

a=39/3

a=13

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