Q: What is the solution?
Solve -161*k + 67*k + 188 = 0 for k.

A: 2

Q: What is the solution?
Solve -1728 = -546*u + 450*u for u.

A: 18

Q: What is the solution?
Solve -6745*k - 422520 = -293599 + 646754 for k.

A:
-115