Question:
Solve -73*i = 75*i + 312*i - 21160 for i..

Answer:
46

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

Answer:
0

Question:
Solve 56*f - 5565 = 25*f + 31*f + 105*f for f..

Answer:
-53

Question:
Solve -89*j + 48*j - 95*j = 2856 for j..

Answer:
-21