Solve 4539 = 7*n + 272*n - 12*n for n.
Solve this plz.

A: 17

Solve 4328*r + 944 = 4269*r for r.
Solve this plz.

A: -16

Solve 14308 - 214007 = 4679*t + 207919 + 125788 for t.
Solve this plz.

A:
-114