Solve 449606*z - 449456*z + 5850 = 0 for z.
Solve this plz.

A: -39

Solve -31 + 157 = 42*p for p.
Solve this plz.

A: 3

Solve 0 = 7*k + 33 - 40 for k.
Solve this plz.

A:
1