3px = 2q(r - 5x)
First, expand. / Your problem should look like: 3px = 2qr - 10qx.
Second, add 10qx to both sides. / Your problem should look like: 3px + 10qx = 2qr.
Third, factor out the common term x. / Your problem should look like: x(3p + 10q) = 2qr.
Fourth, divide both sides by 3p + 10q. / Your problem should look like: x = [tex] \frac{2qr}{3p + 10q} [/tex] which is your answer.
