Question

How do you solve for s in `D = C - s / n`?

Answer 1

`s=(C-D)*n`

Explanation:

First we have to move expression with `s` to left side, and expressions without `s` to the right side:

After first move we get:

`s/n+D=C` - moved `(-s/n)` left

`s/n=C-D` - moved `D` right

Last step is multiplying both sides by `n`

`s=(C-D)*n`