Write down the solution for this math problem: Solve 4*t - 4 = 5*t for t.
answer: -4

Write down the solution for this math problem: Solve 0 = 130*u + 27*u + 122*u - 2511 for u.
answer: 9

Write down the solution for this math problem: Solve 5 = -14*c - 23 for c.
answer: -2

Write down the solution for this math problem: Solve -383 = -21*u - 299 for u.
answer:
4