Question:
Solve -833*n = -20423 - 7899 for n..

Answer:
34

Question:
Solve -131 = 79*y - 842 for y..

Answer:
9

Question:
Solve 196*o - 622 = 9*o + 500 for o..

Answer:
6

Question:
Solve 18*a = 2*a - 14380 + 14844 for a..

Answer:
29