Q: What is the solution?
Solve 20711 - 18917 = 46*x for x.

A: 39

Q: What is the solution?
Solve -2212*q - 31116 = -4572 for q.

A: -12

Q: What is the solution?
Solve -1922*r + 22 = -1900*r for r.

A:
1