Question:
Solve 4*c + 2*c = 0 for c..

Answer:
0

Question:
Solve 9*l - 59 + 113 = 0 for l..

Answer:
-6

Question:
Solve 18*c - 2 = -20 for c..

Answer:
-1

Question:
Solve 355 = 62*v - 79 for v..

Answer:
7