12=-2n+0.2(20-6n)

Solution for 12=-2n+0.2(20-6n) equation:

12=-2n+0.2(20-6n)

We move all terms to the left:

12-(-2n+0.2(20-6n))=0

We add all the numbers together, and all the variables

-(-2n+0.2(-6n+20))+12=0


We calculate terms in parentheses: -(-2n+0.2(-6n+20)), so:

-2n+0.2(-6n+20)

We multiply parentheses

-2n-1.2n+4

We add all the numbers together, and all the variables

-3.2n+4

Back to the equation:

-(-3.2n+4)


We get rid of parentheses

3.2n-4+12=0

We add all the numbers together, and all the variables

3.2n+8=0

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

3.2n=-8

n=-8/3.2

n=-2+1/2