Question: What is the solution?

Solve 0 = 43*k - 20*k - 49 + 348 for k.

Answer: -13

Question: What is the solution?

Solve -41*w - 268 = -1006 for w.

Answer: 18

Question: What is the solution?

Solve 10*k = -883 + 863 for k.

Answer: -2

Question: What is the solution?

Solve 4*w + 159 = 183 for w.

Answer:
6