Solve 31*m - 35*m + 4 = 0 for m.
Solve this plz.

A: 1

Solve -4983*r + 245466 = 31177 - 14929 for r.
Solve this plz.

A: 46

Solve 1223 - 1331 = -18*z for z.
Solve this plz.

A:
6