57=-3(1+2n)-8(5-7n)

Solution for 57=-3(1+2n)-8(5-7n) equation:

57=-3(1+2n)-8(5-7n)

We move all terms to the left:

57-(-3(1+2n)-8(5-7n))=0

We add all the numbers together, and all the variables

-(-3(2n+1)-8(-7n+5))+57=0


We calculate terms in parentheses: -(-3(2n+1)-8(-7n+5)), so:

-3(2n+1)-8(-7n+5)

We multiply parentheses

-6n+56n-3-40

We add all the numbers together, and all the variables

50n-43

Back to the equation:

-(50n-43)


We get rid of parentheses

-50n+43+57=0

We add all the numbers together, and all the variables

-50n+100=0

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

-50n=-100

n=-100/-50

n=+2