Question

Please help solve! I tried but I’m messing this up, would really appreciate it!

Answer 1

K =
`(4r)/(n) -a` n
`\\eq 0`

Explanation:

We have our equation
`r = (n)/(4) (a+K)` and are looking for K

First we have to switch sides :

`(n)/(4) (a+K) = r`

Since we have a denominator of 4, we multiply both sides by 4 :

`n (a+K) = 4r`

We then divide both sides by n :

`a+K = (4r)/(n) ; n\\eq 0`

Subtract a from both sides :

`K = (4r)/(n) -a; n\\eq 0`

^^^