3+7n=2n+4(2+n)

Solution for 3+7n=2n+4(2+n) equation:

3+7n=2n+4(2+n)

We move all terms to the left:

3+7n-(2n+4(2+n))=0

We add all the numbers together, and all the variables

7n-(2n+4(n+2))+3=0


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

2n+4(n+2)

We multiply parentheses

2n+4n+8

We add all the numbers together, and all the variables

6n+8

Back to the equation:

-(6n+8)


We get rid of parentheses

7n-6n-8+3=0

We add all the numbers together, and all the variables

n-5=0

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

n=5