-a+-(a+2)=-3(a-4)

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Solution for -a+-(a+2)=-3(a-4) equation: 



-a+-(a+2)=-3(a-4)

We move all terms to the left:

-a+-(a+2)-(-3(a-4))=0

We add all the numbers together, and all the variables

-1a-(a+2)-(-3(a-4))=0

We get rid of parentheses

-1a-a-(-3(a-4))-2=0



We calculate terms in parentheses: -(-3(a-4)), so:

-3(a-4)

We multiply parentheses

-3a+12

Back to the equation:

-(-3a+12)



We add all the numbers together, and all the variables

-2a-(-3a+12)-2=0

We get rid of parentheses

-2a+3a-12-2=0

We add all the numbers together, and all the variables

a-14=0

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

a=14

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