Q: Solve:
Solve 13*d + 3073 - 798 = -50*d - 2009 for d.

A: -68

Q: Solve:
Solve -187 = 4*y - 20*y - y for y.

A: 11

Q: Solve:
Solve 591*y + 162*y = 196*y - 20609 for y.

A:
-37