Q: What is the solution?
Solve 8*d + 21*d - 240 = 44*d for d.

A: -16

Q: What is the solution?
Solve -8*w + 5*w = -23*w - 1975 + 735 for w.

A: -62

Q: What is the solution?
Solve 20*b - 6 = 54 for b.

A:
3