Question:
Solve 0 = -42*g + 29*g - 28 + 145 for g..

Answer:
9

Question:
Solve 2622 + 15623 + 10079 = 273*r - 7985 for r..

Answer:
133

Question:
Solve 0 = 15*z + 30*z + 180 for z..

Answer:
-4

Question:
Solve -6*i = -17 + 11 for i..

Answer:
1