-75=-5a-4(5-4a)

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Solution for -75=-5a-4(5-4a) equation: 



-75=-5a-4(5-4a)

We move all terms to the left:

-75-(-5a-4(5-4a))=0

We add all the numbers together, and all the variables

-(-5a-4(-4a+5))-75=0



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

-5a-4(-4a+5)

We multiply parentheses

-5a+16a-20

We add all the numbers together, and all the variables

11a-20

Back to the equation:

-(11a-20)



We get rid of parentheses

-11a+20-75=0

We add all the numbers together, and all the variables

-11a-55=0

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

-11a=55

a=55/-11

a=-5

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