Question:
Solve 4*r = 62*r - 823 - 163 for r..

Answer:
17

Question:
Solve -284*j - 656 + 2576 = -924*j for j..

Answer:
-3

Question:
Solve 31*o - 292 - 291 + 397 = 0 for o..

Answer:
6

Question:
Solve 132*b = 127*b - 20 for b..

Answer:
-4