How do you get 99 using four 4s?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.

Which expression gives the exact value of x?