Write down the solution for this math problem: Solve 2351 - 8942 = 538*z - 86*z + 5161 for z.
answer: -26

Write down the solution for this math problem: Solve 128 - 8 = 30*h for h.
answer: 4

Write down the solution for this math problem: Solve -10412 - 17877 = 1251*t - 3269 for t.
answer: -20

Write down the solution for this math problem: Solve -2819*a = -2799*a - 11 - 89 for a.
answer:
5