Solve -13*t + 41*t = -28 for t.
Solve this plz.

A: -1

Solve -12*m + 18*m - 220 = 50*m for m.
Solve this plz.

A: -5

Solve 3100*z + 658*z - 152*z = 305*z - 165050 for z.
Solve this plz.

A:
-50