Q: Solve:
Solve 0 = -8*l - 9 - 7 for l.

A: -2

Q: Solve:
Solve -11*b = 209*b + 158*b - 90*b - 7776 for b.

A: 27

Q: Solve:
Solve -1117*u + 1920 = -637*u for u.

A:
4