Write down the solution for this math problem: Solve -32*c = 19*c for c.
answer: 0

Write down the solution for this math problem: Solve -48*i + 5*i = -4*i for i.
answer: 0

Write down the solution for this math problem: Solve 0 = -42*q - 147 - 63 for q.
answer: -5

Write down the solution for this math problem: Solve r - 12*r + 44 = 0 for r.
answer:
4