Write down the solution for this math problem: Solve 17*p - 8 = 43 for p.
answer: 3

Write down the solution for this math problem: Solve 551*s - 155 = 621*s + 1385 for s.
answer: -22

Write down the solution for this math problem: Solve 578 = 91*x + 315 - 2012 for x.
answer: 25

Write down the solution for this math problem: Solve 84*d - 11*d = 511 for d.
answer:
7