Question:
Solve -80 = 33*t - 13*t for t..

Answer:
-4

Question:
Solve 8*r + 800 = 88*r for r..

Answer:
10

Question:
Solve 887*g - 939*g - 12 = 716 for g..

Answer:
-14

Question:
Solve -38 + 51 = 26*s - 98 - 19 for s..

Answer:
5