Question: What is the solution?

Solve 151 + 122 = 1351*i - 1312*i for i.

Answer: 7

Question: What is the solution?

Solve 2316*s - 14357 - 15873 = -9354 + 13864 for s.

Answer: 15

Question: What is the solution?

Solve 0 = 591*k + 1831*k + 671*k + 65*k + 290536 for k.

Answer: -92

Question: What is the solution?

Solve -48411 = 659*r - 78*r + 7946 for r.

Answer:
-97