Q: Solve:
Solve 191*r = -1440 - 1043 for r.

A: -13

Q: Solve:
Solve -132 - 10491 = 1512*o + 808 - 847 for o.

A: -7

Q: Solve:
Solve -58*a = 19*a + 45*a + 1098 for a.

A:
-9