-3(-a+4)=-5(a-4)

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Solution for -3(-a+4)=-5(a-4) equation: 



-3(-a+4)=-5(a-4)

We move all terms to the left:

-3(-a+4)-(-5(a-4))=0

We add all the numbers together, and all the variables

-3(-1a+4)-(-5(a-4))=0

We multiply parentheses

3a-(-5(a-4))-12=0



We calculate terms in parentheses: -(-5(a-4)), so:

-5(a-4)

We multiply parentheses

-5a+20

Back to the equation:

-(-5a+20)



We get rid of parentheses

3a+5a-20-12=0

We add all the numbers together, and all the variables

8a-32=0

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

8a=32

a=32/8

a=4

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