Q: Solve:
Solve -1664*f + 2101*f - 86916 - 88896 = -4071*f for f.

A: 39

Q: Solve:
Solve -104 = 149*a + 110 - 65 for a.

A: -1

Q: Solve:
Solve -98909*v + 98848*v = -976 for v.

A:
16