Question: What is the solution?

Solve 5*u + 43 = 33 for u.

Answer: -2

Question: What is the solution?

Solve -125*d = 157*d + 42*d + 317*d - 12820 for d.

Answer: 20

Question: What is the solution?

Solve -10396 = 172*a + 43*a - 2441 for a.

Answer: -37

Question: What is the solution?

Solve 5*j + 21*j - 117 = 65 for j.

Answer:
7