Problem: Math Problem
Solve 11320 = -87*d - 25*d - 171*d for d.

A: -40

Problem: Math Problem
Solve 1333*l - 72 = 1321*l for l.

A: 6

Problem: Math Problem
Solve -84*r - 81*r - 2145 = 0 for r.

A:
-13