Q: What is the solution?
Solve 0*v - 9 = 3*v for v.

A: -3

Q: What is the solution?
Solve 1166 - 1066 = -10*u for u.

A: -10

Q: What is the solution?
Solve 8*a - 21 - 35 = 0 for a.

A:
7