Solve 1231 + 1433 = -72*d for d.
Solve this plz.

A: -37

Solve -270 - 286 = 30*x - 91*x + 1335 for x.
Solve this plz.

A: 31

Solve -7*d - 4 = -9*d for d.
Solve this plz.

A:
2