Piper's first step in solving this rational equation is to simplify it by multiplying both sides by a common denominator. Which is the simplest expression she can use to do this? 7/4x+24 + 17x/5 = 3/x²-36
a. 5(x²-36)(4x+24)
b. 5(x-6)(x+6)(4x+24)
c. 20(x²-36)(x+6)
d. 20(x-6)(x+6)
