Write down the solution for this math problem: Solve -2990 = 10*t - 2950 for t.
answer: -4

Write down the solution for this math problem: Solve 16*r - 12 = 10*r for r.
answer: 2

Write down the solution for this math problem: Solve 19*v = 22*v + 9 for v.
answer: -3

Write down the solution for this math problem: Solve 22630 = 1780728*m - 1780418*m for m.
answer:
73