Q: Solve 1 = -6*x + 5*x for x.

A: -1

Q: Solve -645*r = 403*r + 283*r - 62557 for r.

A: 47

Q: Solve -2463*v = 52166 - 443 for v.

A: -21

Q: Solve -1079*r + 1065*r - 42 = 0 for r.

A:
-3