Write down the solution for this math problem: Solve -3*z + 8*z = -25 for z.
answer: -5

Write down the solution for this math problem: Solve -2252*o + 30506 - 41399 = 279*o + 128312 for o.
answer: -55

Write down the solution for this math problem: Solve 170*r - 73*r = 74*r - 391 for r.
answer: -17

Write down the solution for this math problem: Solve 9*n - 707 = -743 for n.
answer:
-4