Question: What is the solution?

Solve 2*j - 6 = 5*j for j.

Answer: -2

Question: What is the solution?

Solve 52*a = -192*a - 10929 - 17162 - 2409 for a.

Answer: -125

Question: What is the solution?

Solve -5859 + 9517 = -1014*r - 13580 for r.

Answer: -17

Question: What is the solution?

Solve 7031 + 2527 + 157 = 335*r for r.

Answer:
29