Solve 551*n + 1756*n + 13115 = -11517 + 6176 for n.
Solve this plz.

A: -8

Solve d - 24*d = -138 for d.
Solve this plz.

A: 6

Solve 0 = -148*x + 155*x - 140 for x.
Solve this plz.

A:
20