Write down the solution for this math problem: Solve 35*r - 22 = 57*r for r.
answer: -1

Write down the solution for this math problem: Solve 117561 = -2150*n - 311 - 6828 for n.
answer: -58

Write down the solution for this math problem: Solve 6 = 6*i - 18 for i.
answer: 4

Write down the solution for this math problem: Solve -5*q + 20*q = 30 for q.
answer:
2