Question: What is the solution?

Solve 7*j - 64 = -5*j + 9*j + 98 for j.

Answer: 54

Question: What is the solution?

Solve 21*u - 2782 = -2992 for u.

Answer: -10

Question: What is the solution?

Solve 43847 + 108874 = 2151*o for o.

Answer: 71

Question: What is the solution?

Solve 3870*v + 18170 - 127502 = 833*v for v.

Answer:
36