Question

Make q the subject of the formula
X=p-q/pq

Answer 1

Firstly, multiply both sides by pq:
`pqx=p-q`

Next, add q onto both sides of the equation:
`pqx+q=p`

Next, factor out q:
`q(px+1)=p`

Lastly, divide both sides by (px+1) and your answer will be
`q=(p)/(px+1)`