Write down the solution for this math problem: Solve -151*d - 1272 = 146*d - 381 for d.
answer: -3

Write down the solution for this math problem: Solve -13311 = 105051*b - 105204*b for b.
answer: 87

Write down the solution for this math problem: Solve 188 - 115 = -13*i + 125 for i.
answer: 4

Write down the solution for this math problem: Solve -694*s - 537*s + 20927 = 0 for s.
answer:
17