Write down the solution for this math problem: Solve -51 = -24*i + 298 - 37 for i.
answer: 13

Write down the solution for this math problem: Solve -382*r = -53*r + 1124 + 4378 - 28203 for r.
answer: 69

Write down the solution for this math problem: Solve -57*r - 136360 = 6851*r + 5573*r + 25893 for r.
answer: -13

Write down the solution for this math problem: Solve -16969226 + 16969786 = 35*u for u.
answer:
16