Question:
Solve 495*h = 2996 + 2041 + 1398 for h..

Answer:
13

Question:
Solve -1008 - 963 = 139*r - 442 for r..

Answer:
-11

Question:
Solve -214*o = -710*o - 453*o + 49*o + 4500 for o..

Answer:
5

Question:
Solve -59*r - 7028 = -14430 + 8877 for r..

Answer:
-25