Question:
Solve -306*z - 1387 = -2940 - 1507 for z..

Answer:
10

Question:
Solve -10*i + 14*i + 147 = -17*i for i..

Answer:
-7

Question:
Solve -3665*m + 3666*m = -1 for m..

Answer:
-1

Question:
Solve -8*h = -h - 15300 + 15111 for h..

Answer:
27