Write down the solution for this math problem: Solve -952*u + 70 = -947*u for u.
answer: 14

Write down the solution for this math problem: Solve 66 = 10*k + 46 for k.
answer: 2

Write down the solution for this math problem: Solve 354*z = -543*z + 17*z + 22880 for z.
answer: 26

Write down the solution for this math problem: Solve 4*i - 16*i - 31*i - 17*i = 0 for i.
answer:
0