Q: Solve:
Solve 4425*h - 285 = 4444*h for h.

A: -15

Q: Solve:
Solve 0 = -11*d - 13*d + 6*d + 90 for d.

A: 5

Q: Solve:
Solve 0 = 15*r - 278 + 143 for r.

A:
9