Question: What is the solution?

Solve 1580*f - 6547 = -1807 for f.

Answer: 3

Question: What is the solution?

Solve -345 = -2*t - 343 for t.

Answer: 1

Question: What is the solution?

Solve -372*h + 5165 + 19580 = -34*h - 1957 for h.

Answer: 79

Question: What is the solution?

Solve -127*r - 1372 - 406 = 0 for r.

Answer:
-14