Solve 19 = -u - 31 + 43 for u.
Solve this plz.

A: -7

Solve 0 = 5*d - 14*d - 36 for d.
Solve this plz.

A: -4

Solve 254*m + 5426 = 56*m - 2494 for m.
Solve this plz.

A:
-40