Q: Solve:
Solve 78*z + 63*z + 762 = 6036 + 4173 for z.

A: 67

Q: Solve:
Solve 30973 = -434*a + 159 for a.

A: -71

Q: Solve:
Solve 9*q - 3 = 8*q for q.

A:
3