Write down the solution for this math problem: Solve 16 = -3*u + 25 for u.
answer: 3

Write down the solution for this math problem: Solve -5636 + 101925 + 18951 = 5762*v for v.
answer: 20

Write down the solution for this math problem: Solve -13*l - 23*l - 12*l + 336 = 0 for l.
answer: 7

Write down the solution for this math problem: Solve 8*w + 440 - 167 = 146 + 151 for w.
answer:
3