Question: What is the solution?

Solve 67*j + 214*j = 2529 for j.

Answer: 9

Question: What is the solution?

Solve 3*d + 4*d + 7 = 0 for d.

Answer: -1

Question: What is the solution?

Solve -23*u = 5*u - 196 for u.

Answer: 7

Question: What is the solution?

Solve 0 = -10*k - 2 + 12 for k.

Answer:
1