Write down the solution for this math problem: Solve 0 = -0*s + s for s.
answer: 0

Write down the solution for this math problem: Solve 1378*i + 801*i + 15855 = 228*i + 58777 for i.
answer: 22

Write down the solution for this math problem: Solve -5*h = -4*h + 2 for h.
answer: -2

Write down the solution for this math problem: Solve 9*k = -6*k - k - 12*k for k.
answer:
0