21=-8(8n+8)-3(4n-3)

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Solution for 21=-8(8n+8)-3(4n-3) equation: 



21=-8(8n+8)-3(4n-3)

We move all terms to the left:

21-(-8(8n+8)-3(4n-3))=0



We calculate terms in parentheses: -(-8(8n+8)-3(4n-3)), so:

-8(8n+8)-3(4n-3)

We multiply parentheses

-64n-12n-64+9

We add all the numbers together, and all the variables

-76n-55

Back to the equation:

-(-76n-55)



We get rid of parentheses

76n+55+21=0

We add all the numbers together, and all the variables

76n+76=0

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

76n=-76

n=-76/76

n=-1

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