Question: What is the solution?

Solve 0 = -7*r - 1299 + 1327 for r.

Answer: 4

Question: What is the solution?

Solve 14361*o - 278519 - 924855 = 1839*o + 374398 for o.

Answer: 126

Question: What is the solution?

Solve -70*o + 12 = -67*o for o.

Answer: 4

Question: What is the solution?

Solve 351*z + 2570 + 62447 = 1174*z for z.

Answer:
79