Write down the solution for this math problem: Solve 0 = -156*v + 19630 - 21190 for v.
answer: -10

Write down the solution for this math problem: Solve -96*u + 91*u - 20 = 0 for u.
answer: -4

Write down the solution for this math problem: Solve 0 = 26*n + 20*n + 230 for n.
answer: -5

Write down the solution for this math problem: Solve -71*c = -188*c - 99 + 1035 for c.
answer:
8