Write down the solution for this math problem: Solve 17*r = 63*r - 460 for r.
answer: 10

Write down the solution for this math problem: Solve -14*i - 504 = -77*i for i.
answer: 8

Write down the solution for this math problem: Solve 27 = -54*y - 189 for y.
answer: -4

Write down the solution for this math problem: Solve -90*m = -83*m for m.
answer:
0