Write down the solution for this math problem: Solve -42672*r = -42736*r - 576 for r.
answer: -9

Write down the solution for this math problem: Solve 5*t - 319*t + 13002 = 277*t for t.
answer: 22

Write down the solution for this math problem: Solve 4 = -v + 5 for v.
answer: 1

Write down the solution for this math problem: Solve 0 = -186*f + 1251 - 1065 for f.
answer:
1