Problem: Math Problem
Solve -123 = 6*y - 105 for y.

A: -3

Problem: Math Problem
Solve -2130*z - 2897*z + 1749*z + 697336 = 1926*z for z.

A: 134

Problem: Math Problem
Solve -27*r = -42*r - 45 for r.

A:
-3