Problem: Math Problem
Solve 4*r - 166*r + 4225 = 7*r for r.

A: 25

Problem: Math Problem
Solve -2*r + 44 - 40 = 0 for r.

A: 2

Problem: Math Problem
Solve 408*v - 1121*v = 389*v - 40774 for v.

A:
37