Q: Solve:
Solve -81*d + 2456 = -5*d + 400 - 1288 for d.

A: 44

Q: Solve:
Solve -21*i + 102*i + 81 = 0 for i.

A: -1

Q: Solve:
Solve 15*j + 40 + 20 = 0 for j.

A:
-4