Q: Solve:
Solve -1509*h + 1448*h = 976 for h.

A: -16

Q: Solve:
Solve 136*m = 75*m + 67*m - 36 for m.

A: 6

Q: Solve:
Solve -4300 = -667133*l + 666961*l for l.

A:
25