Q: Solve:
Solve -283*i + 5222 - 34856 = 138*i + 28*i for i.

A: -66

Q: Solve:
Solve -3*r = -27 + 21 for r.

A: 2

Q: Solve:
Solve -7*h + 2*h + 25 = 0 for h.

A:
5