Solve 13*u = 28 + 117 - 41 for u.
Solve this plz.

A: 8

Solve -4387 = -115*d - 48*d + 4976 - 1865 for d.
Solve this plz.

A: 46

Solve -53*a - 9 - 7030 = 159*a + 4197 for a.
Solve this plz.

A:
-53