Solve 0 = 79*y - 17*y - 21 - 41 for y.
Solve this plz.

A: 1

Solve 458*n = -15730 + 29470 for n.
Solve this plz.

A: 30

Solve -4380 - 878 = 478*b for b.
Solve this plz.

A:
-11