Write down the solution for this math problem: Solve 7*r - 89863 = -5*r - 91135 for r.
answer: -106

Write down the solution for this math problem: Solve 0 = 2*x - 10 - 4 + 18 for x.
answer: -2

Write down the solution for this math problem: Solve -225*i - 309*i + 2433 = -6111 for i.
answer: 16

Write down the solution for this math problem: Solve 392*m + 29575 = -449*m - 26772 for m.
answer:
-67