Write down the solution for this math problem: Solve -720 = 7*u - 41*u - 38*u for u.
answer: 10

Write down the solution for this math problem: Solve -39*z - 36 = -27*z for z.
answer: -3

Write down the solution for this math problem: Solve 19993*t - 10304 = 19769*t for t.
answer: 46

Write down the solution for this math problem: Solve 628*f + 438986 = 428310 for f.
answer:
-17