Q: Solve:
Solve -2144*r = 567*r + 533*r - 292*r + 53136 for r.

A: -18

Q: Solve:
Solve 13*k = 2*k + 22 for k.

A: 2

Q: Solve:
Solve -212*n - 390*n - 5*n - 40669 = 0 for n.

A:
-67