Q: What is the solution?
Solve 1838 + 947 - 4875 = -55*j for j.

A: 38

Q: What is the solution?
Solve 9*a = 203 - 239 for a.

A: -4

Q: What is the solution?
Solve -3*z + 9*z - 30 = 0 for z.

A:
5