Solve 197*z + 54*z - 23*z + 4104 = 0 for z.
Solve this plz.

A: -18

Solve -73754 + 23654 = -7668*l + 42169 + 99431 for l.
Solve this plz.

A: 25

Solve 83*n + 198 = 105*n for n.
Solve this plz.

A:
9