tolongg kaaakkk waktu mau habis

F(3)=12
3m + n = 12
.
F(4) = -2
4m + n = -2
.
Eliminasi
3m + n = 12
4m + n = -2
------------------ -
-m = 14
n = 54
.
F(-3) = 14(-3) + (54) = -42 +54 = 12