Question:
Solve -22*v - 6198 = -7100 for v..

Answer:
41

Question:
Solve -693 + 2121 - 695 - 700 = 3*k for k..

Answer:
11

Question:
Solve -5*x + 10 = 30 for x..

Answer:
-4

Question:
Solve 0 = -13*i - 22 - 4 for i..

Answer:
-2