Problem: Math Problem
Solve -r = 2*r + 9*r for r.

A: 0

Problem: Math Problem
Solve -39*x + 149*x - 112 - 108 = 0 for x.

A: 2

Problem: Math Problem
Solve 2711*y + 4384*y = 356*y - 485208 for y.

A:
-72