Question:
Solve -50*o - 423*o - 1200 = -10660 for o..

Answer:
20

Question:
Solve -10 = -9*k + 17 for k..

Answer:
3

Question:
Solve 4 = 2*k - 6 for k..

Answer:
5

Question:
Solve 34 - 33 = -q for q..

Answer:
-1