7(n-1)=-0.2(3+n)

Solution for 7(n-1)=-0.2(3+n) equation:

7(n-1)=-0.2(3+n)

We move all terms to the left:

7(n-1)-(-0.2(3+n))=0

We add all the numbers together, and all the variables

7(n-1)-(-0.2(n+3))=0

We multiply parentheses

7n-(-0.2(n+3))-7=0


We calculate terms in parentheses: -(-0.2(n+3)), so:

-0.2(n+3)

We multiply parentheses

-0.2n-0.6

Back to the equation:

-(-0.2n-0.6)


We get rid of parentheses

7n+0.2n+0.6-7=0

We add all the numbers together, and all the variables

7.2n-6.4=0

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

7.2n=6.4

n=6.4/7.2

n=4.5714285714286/5.1428571428571