Question: What is the solution?

Solve 4 = 53*b + 269 for b.

Answer: -5

Question: What is the solution?

Solve -151*v + 141*v = 70 for v.

Answer: -7

Question: What is the solution?

Solve l + 3 = 2*l for l.

Answer: 3

Question: What is the solution?

Solve 0 = -10088*d + 10103*d + 105 for d.

Answer:
-7