Question

How do you solve for y in `(5/a) – (4/y) = (1/b)`?

Answer 1

`y=(4ab)/(5b-a)`

Explanation:

We write the equation in this form

`5/a-1/b=4/y`
so
`(5b-a)/(ab)=4/y`
thus

`y=(4ab)/(5b-a)`