Write down the solution for this math problem: Solve 64*w = 63*w + 4 for w.
answer: 4

Write down the solution for this math problem: Solve -10*w - 54 = 26 for w.
answer: -8

Write down the solution for this math problem: Solve -33*u - 76*u - 2071 = 0 for u.
answer: -19

Write down the solution for this math problem: Solve 399 = -7*m + 574 for m.
answer:
25