Question:
Solve 0 = -g - 15 + 20 for g..

Answer:
5

Question:
Solve -37970*w + 36648*w = -30406 for w..

Answer:
23

Question:
Solve 649*j + 147 = 600*j for j..

Answer:
-3

Question:
Solve 18*u - 669 + 1011 = 0 for u..

Answer:
-19