Q: Solve:
Solve 93*z + 17064 = -20*z - 124*z for z.

A: -72

Q: Solve:
Solve -21 = 5*l - 26 for l.

A: 1

Q: Solve:
Solve -607*d - 3713 + 1623 = 6408 for d.

A:
-14