Q: Solve:
Solve -46*f - 21*f - 26*f = -52*f + 779 for f.

A: -19

Q: Solve:
Solve -105*y = 72*y + 1597 + 3005 for y.

A: -26

Q: Solve:
Solve 0 = -4*r + 120 - 116 for r.

A:
1