Q: Solve -643 - 291 = 73*p - 58 for p.

A: -12

Q: Solve 0 = 2*j - 172 + 182 for j.

A: -5

Q: Solve 0 = -23*q - 23*q + 46 for q.

A: 1

Q: Solve -154*b = -142*b for b.

A:
0