Write down the solution for this math problem: Solve 0 = -645*d + 119600 - 129275 for d.
answer: -15

Write down the solution for this math problem: Solve 4*v - 2734 = -2754 for v.
answer: -5

Write down the solution for this math problem: Solve -32 = 6*f + 2*f for f.
answer: -4

Write down the solution for this math problem: Solve -245*s = 2393 + 5202 for s.
answer:
-31