Solve 747*m + 365*m = 50040 for m.
Solve this plz.

A: 45

Solve -456*m + 738*m = 350*m + 5100 for m.
Solve this plz.

A: -75

Solve 139 = -25*s + 39 for s.
Solve this plz.

A:
-4