Question: What is the solution?

Solve 29*j + 37*j = -149*j - 430 for j.

Answer: -2

Question: What is the solution?

Solve -k + 16 = 20 for k.

Answer: -4

Question: What is the solution?

Solve -8*s + 36 = s for s.

Answer: 4

Question: What is the solution?

Solve 54*k + 390 = -24*k for k.

Answer:
-5