Question:
Solve 0 = 20*c + 2967 - 2947 for c..

Answer:
-1

Question:
Solve -17*q + 10 = -7 for q..

Answer:
1

Question:
Solve -560*g + 591*g + 558 = 0 for g..

Answer:
-18

Question:
Solve 2*u - 7*u - 5 = 0 for u..

Answer:
-1