Write down the solution for this math problem: Solve -269*r + 12180 = -54*r + 205*r for r.
answer: 29

Write down the solution for this math problem: Solve 103591*q - 237 = 103652*q - 1701 for q.
answer: 24

Write down the solution for this math problem: Solve m - 12*m = 22 for m.
answer: -2

Write down the solution for this math problem: Solve 917*s + 12 = 921*s for s.
answer:
3