Write down the solution for this math problem: Solve -9071*d - 3580*d + 422956 + 134177 = -619410 for d.
answer: 93

Write down the solution for this math problem: Solve 241*u + 218*u - 23051 = 25*u + 1057*u for u.
answer: -37

Write down the solution for this math problem: Solve 6798 = 382*f - 796*f + 620*f for f.
answer: 33

Write down the solution for this math problem: Solve -1746*r + 2990 = -1861*r for r.
answer:
-26