Write down the solution for this math problem: Solve 28*a - 109 = 143 for a.
answer: 9

Write down the solution for this math problem: Solve 48*f - 4354 - 508 = -173*f for f.
answer: 22

Write down the solution for this math problem: Solve -8*f - 147 = -163 for f.
answer: 2

Write down the solution for this math problem: Solve -71 = 7*p - 23 - 34 for p.
answer:
-2