Q: What is the solution?
Solve 9913*l = 19390*l - 9846*l - 8487 for l.

A: -23

Q: What is the solution?
Solve -7873 + 29473 = -323*f + 1043*f for f.

A: 30

Q: What is the solution?
Solve -20092 = -4863*d + 37703 + 39465 for d.

A:
20