Q: Solve -5*s + 7*s = 3*s for s.

A: 0

Q: Solve -169*q + 390 = -143*q for q.

A: 15

Q: Solve -2662*d - 19083 + 4223 = -4148*d for d.

A: 10

Q: Solve 24915 = 740*t + 495 for t.

A:
33