Write down the solution for this math problem: Solve -914 = -37*r - 766 for r.
answer: 4

Write down the solution for this math problem: Solve 628*f = 634*f + 30 for f.
answer: -5

Write down the solution for this math problem: Solve 1055*s = 917*s + 4278 for s.
answer: 31

Write down the solution for this math problem: Solve 1 = -5*z + 16 for z.
answer:
3