Solve 15 = 6*m - 22*m + m for m.
Solve this plz.

A: -1

Solve 35*a + 81*a = 524*a - 13872 for a.
Solve this plz.

A: 34

Solve -9*d - 46*d + 720 = -10*d for d.
Solve this plz.

A:
16