Solve -4239 - 24122 + 12004 = 586*r + 36969 for r.
Solve this plz.

A: -91

Solve 548*n - 90 = 566*n for n.
Solve this plz.

A: -5

Solve 3020*r - 1663*r - 6371 = 1634*r for r.
Solve this plz.

A:
-23