Q: What is the solution?
Solve -50 = 2*j - 42 for j.

A: -4

Q: What is the solution?
Solve 4947 - 6876 - 7532 = 435*r + 12289 for r.

A: -50

Q: What is the solution?
Solve -1002 = 284*w - 3558 for w.

A:
9