Question:
Solve -9*g = -0 + 9 for g..

Answer:
-1

Question:
Solve 30*d + 3100 = 2740 for d..

Answer:
-12

Question:
Solve 37*a - 193*a = -42*a + 259*a - 25364 for a..

Answer:
68

Question:
Solve 40*g - 6*g = 238 for g..

Answer:
7