Question: What is the solution?

Solve 30 = 14*d - 8*d for d.

Answer: 5

Question: What is the solution?

Solve 0 = -36*b + 77 + 175 for b.

Answer: 7

Question: What is the solution?

Solve 481*x - 7933 = -1322 + 5414 for x.

Answer: 25

Question: What is the solution?

Solve 0 = 194*x + 17*x + 211 for x.

Answer:
-1