-19=-8(-4+a)-(2a+1)

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Solution for -19=-8(-4+a)-(2a+1) equation: 



-19=-8(-4+a)-(2a+1)

We move all terms to the left:

-19-(-8(-4+a)-(2a+1))=0

We add all the numbers together, and all the variables

-(-8(a-4)-(2a+1))-19=0



We calculate terms in parentheses: -(-8(a-4)-(2a+1)), so:

-8(a-4)-(2a+1)

We multiply parentheses

-8a-(2a+1)+32

We get rid of parentheses

-8a-2a-1+32

We add all the numbers together, and all the variables

-10a+31

Back to the equation:

-(-10a+31)



We get rid of parentheses

10a-31-19=0

We add all the numbers together, and all the variables

10a-50=0

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

10a=50

a=50/10

a=5

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