Write down the solution for this math problem: Solve 158*c + 378*c + 380 = 156*c for c.
answer: -1

Write down the solution for this math problem: Solve -33248 = 264*s - 25592 for s.
answer: -29

Write down the solution for this math problem: Solve -18 = 2*s - 12 for s.
answer: -3

Write down the solution for this math problem: Solve -1894*z - 35640 = 482*z for z.
answer:
-15