-57=-4(2n+3)-n

Solution for -57=-4(2n+3)-n equation:

-57=-4(2n+3)-n

We move all terms to the left:

-57-(-4(2n+3)-n)=0


We calculate terms in parentheses: -(-4(2n+3)-n), so:

-4(2n+3)-n

We add all the numbers together, and all the variables

-1n-4(2n+3)

We multiply parentheses

-1n-8n-12

We add all the numbers together, and all the variables

-9n-12

Back to the equation:

-(-9n-12)


We get rid of parentheses

9n+12-57=0

We add all the numbers together, and all the variables

9n-45=0

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

9n=45

n=45/9

n=5