Question:
Solve -20*y + 42*y - 14*y - 40 = 0 for y..

Answer:
5

Question:
Solve 0 = -s - 2*s + 9 for s..

Answer:
3

Question:
Solve -259*t + 4354 = -35*t + 1218 for t..

Answer:
14

Question:
Solve 0 = 127*g - 479*g + 12398 - 4570 + 4844 for g..

Answer:
36