87=-3(-5n-4)

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Solution for 87=-3(-5n-4) equation: 



87=-3(-5n-4)

We move all terms to the left:

87-(-3(-5n-4))=0



We calculate terms in parentheses: -(-3(-5n-4)), so:

-3(-5n-4)

We multiply parentheses

15n+12

Back to the equation:

-(15n+12)



We get rid of parentheses

-15n-12+87=0

We add all the numbers together, and all the variables

-15n+75=0

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

-15n=-75

n=-75/-15

n=+5

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