Question:
Solve -30 = 3*k + 3*k for k..

Answer:
-5

Question:
Solve -197*n + 212*n - 360 = 0 for n..

Answer:
24

Question:
Solve 73*v - 53*v - 120 = 0 for v..

Answer:
6

Question:
Solve -568*l - 715*l - 74*l + 86991 + 14784 = 0 for l..

Answer:
75