Question:
Solve -3*z - 330 = 38*z - 30*z for z..

Answer:
-30

Question:
Solve -15*i + 392*i = -118*i - 6973 - 2927 for i..

Answer:
-20

Question:
Solve -1081035*s + 1080989*s = -966 for s..

Answer:
21

Question:
Solve 0 = 25*l - 28*l - 9 for l..

Answer:
-3