Write down the solution for this math problem: Solve 156*v - 36 = -192 for v.
answer: -1

Write down the solution for this math problem: Solve 164 = 131*k - 49*k for k.
answer: 2

Write down the solution for this math problem: Solve 9550 - 10414 = 48*n for n.
answer: -18

Write down the solution for this math problem: Solve -25 = -41*b + 98 for b.
answer:
3