Question

Q=p(r+s) solve for p

Answer 1

Q=p(r+s)
Q/(r+s)= p(r+s)/(r+s)
ANSWER
Q/(r+s) = P

Whatever you do to one side of the equation, you must do to the other.

Answer 2

Q = p(r + s)
Use the distributive property
Q = pr + ps
Q = p x r + p x s
Q = p x p + r x s
Q = p^2 + rs
Subtract rs from both sides
Q - rs = p^2
Square root both sides
sqrt Q - rs = p