Q: Solve:
Solve -4732183*r = -4732169*r + 700 for r.

A: -50

Q: Solve:
Solve -10*b + 6*b = 44*b + 480 for b.

A: -10

Q: Solve:
Solve -42*v - 5*v - 12*v = -1062 for v.

A:
18