Question: What is the solution?

Solve 535*u - 96*u + 22275 = 307*u + 537*u for u.

Answer: 55

Question: What is the solution?

Solve 27*o - 46*o = 57 for o.

Answer: -3

Question: What is the solution?

Solve 58*u = -61*u - 3*u + 976 for u.

Answer: 8

Question: What is the solution?

Solve -18*z = 27*z + 75*z + 2160 for z.

Answer:
-18