Q: Solve -2241*w - 72 = -2253*w for w.

A: 6

Q: Solve 87 + 13 = 10*q for q.

A: 10

Q: Solve 140 - 224 = 12*r for r.

A: -7

Q: Solve -3*u + 19 = -22*u for u.

A:
-1