Write down the solution for this math problem: Solve 7*t = 5*t for t.
answer: 0

Write down the solution for this math problem: Solve 178 = 9*s + 196 for s.
answer: -2

Write down the solution for this math problem: Solve 143*t + 154691 - 152975 = 0 for t.
answer: -12

Write down the solution for this math problem: Solve 1474*z = 6700 + 22418 - 7008 for z.
answer:
15