Write down the solution for this math problem: Solve 5*r = 23*r + 4 - 130 for r.
answer: 7

Write down the solution for this math problem: Solve 25 = -128*z + 123*z for z.
answer: -5

Write down the solution for this math problem: Solve 1584 = 11*d + 51*d + 4*d for d.
answer: 24

Write down the solution for this math problem: Solve 249*m + 1318 = 73 for m.
answer:
-5