Question

What is q = p(r+s), for p

Answer 1

q = p(r+s)
q/(r+s) = p <-- Transpose
p = q/(r+s) <-- By the Law of Transitive Equality

Answer 2

q = p (r + s) Divide both sides by (r + s)

`(q)/(r + s)` = p Switch the sides to make it easier to read
p =
`(q)/(r + s)`