Solve 1037*a + 1466*a - 192731 = 0 for a.
Solve this plz.

A: 77

Solve 8*s + 15 = 3*s for s.
Solve this plz.

A: -3

Solve 0 = 8598*r - 106662 - 194268 for r.
Solve this plz.

A:
35