Write down the solution for this math problem: Solve -111300*r = -111897*r + 13731 for r.
answer: 23

Write down the solution for this math problem: Solve 10349 - 22134 - 7839 = 6775*y + 14251 for y.
answer: -5

Write down the solution for this math problem: Solve 12*v - 90*v = 63*v + 6768 for v.
answer: -48

Write down the solution for this math problem: Solve -7*m + 9 + 12 = 0 for m.
answer:
3