Write down the solution for this math problem: Solve 10863*c + 48 - 152 = 10855*c for c.
answer: 13

Write down the solution for this math problem: Solve 96280 = -38*r + 92746 for r.
answer: -93

Write down the solution for this math problem: Solve 639 + 426 = -71*t for t.
answer: -15

Write down the solution for this math problem: Solve 50*u - 89 = 61 for u.
answer:
3