Jawabanmu

2014-03-10T08:13:11+07:00
2014-03-10T08:13:28+07:00
2(×+3)+(×-4)=9
2x + 6 + x - 4 = 9
2x + x + 6 - 4 = 9
3x + 2 = 9
3x = 9 - 2
3x = 7
x = 7/3