Question:
Solve -3*j - 4*j + 28 = 0 for j..

Answer:
4

Question:
Solve 1152*n + 1329*n = -620*n + 96687 + 89373 for n..

Answer:
60

Question:
Solve 0*j = -6*j - 6*j for j..

Answer:
0

Question:
Solve -20*b - 15 = -17*b for b..

Answer:
-5