Jawabanmu

2014-02-20T20:19:20+07:00
3x+2y=8 (kali 1)
2x-y=3 (kali 2)
jadi
3x + 2y = 8
4x - 2y = 6
(dikurangi)
-x=2
[x= -2]

cari (y)
2x-y=3
2.(-2) - y = 3
-4 - y = 3
-y = 3 + 4
[y = -7]

nah baru 5x + y
= 5.(-2) - 7
= -10 - 7
= -17 selesai :D