Write down the solution for this math problem: Solve 848 - 2747 - 1971 = 215*q for q.
answer: -18

Write down the solution for this math problem: Solve 0 = -15*r - 48 + 3 for r.
answer: -3

Write down the solution for this math problem: Solve 7*s + 14 = 56 for s.
answer: 6

Write down the solution for this math problem: Solve 2 = 9*t - 16 for t.
answer:
2