Question: What is the solution?

Solve 106*v - 648*v - 349610 = 2106*v - 95402 for v.

Answer: -96

Question: What is the solution?

Solve -50049 = 5*w + 3*w - 50073 for w.

Answer: 3

Question: What is the solution?

Solve 397*r + 420*r - 20826 + 22047 = -44531 for r.

Answer: -56

Question: What is the solution?

Solve -224*d + 689*d - 4218 = 254*d + 249*d for d.

Answer:
-111