Question: What is the solution?

Solve -173*v - 4991 = 786*v - 246*v for v.

Answer: -7

Question: What is the solution?

Solve -19*l + 4*l + 30 = 0 for l.

Answer: 2

Question: What is the solution?

Solve 159 + 2475 - 16734 = -188*u for u.

Answer: 75

Question: What is the solution?

Solve 0 = -15*w + 81 + 9 for w.

Answer:
6