Q: Solve:
Solve -16569*k = -16903*k - 22044 for k.

A: -66

Q: Solve:
Solve 64*u - 127*u = -69*u + 42 for u.

A: 7

Q: Solve:
Solve -12*y - 12*y = -4*y + 200 for y.

A:
-10