Solve 19820 = -957*w - 18460 for w.
Solve this plz.

A: -40

Solve 247*a + 8540 + 2960 = -213*a for a.
Solve this plz.

A: -25

Solve 23*p - 295 - 289 + 170 = 0 for p.
Solve this plz.

A:
18