Solve -4*z - 3*z = 28 for z.
Solve this plz.

A: -4

Solve -2 - 9 = 105*z - 104*z for z.
Solve this plz.

A: -11

Solve -697*s = -788*s - 1123 - 879 for s.
Solve this plz.

A:
-22