Question: What is the solution?

Solve 26*f - 13*f - 100 = 43 for f.

Answer: 11

Question: What is the solution?

Solve -343*f + 1975 - 17004 = 70*f + 15533 for f.

Answer: -74

Question: What is the solution?

Solve 22*u - 253 + 167 = 398 for u.

Answer: 22

Question: What is the solution?

Solve -9309*b = -9318*b + 27 for b.

Answer:
3