Write down the solution for this math problem: Solve -42 = -450*r + 443*r for r.
answer: 6

Write down the solution for this math problem: Solve 0*p - 13414 = -341*p - 12*p for p.
answer: 38

Write down the solution for this math problem: Solve 25868*t - 142478 = 1073318 for t.
answer: 47

Write down the solution for this math problem: Solve -2444 = -9*r + 110*r - 7*r for r.
answer:
-26