Jawabanmu

2014-03-08T08:17:23+07:00
3/4n-1/2n = -4 - 8 (X4)
3n - 2n = -16 -32
n = -48

1 5 1
2014-03-08T09:53:54+07:00
3/4n+8=1/2n-4
3/4n-1/2n=-8-4
1/4n=-12
n=12x4/1
n=-48