Jawabanmu

2014-09-02T20:13:55+07:00
1. -9+[3x[-2]]= -9 + [-6]
= -15(d)

2. 5 2/7 - 9/4 : 7/2= 5 2/7 - 9/4x2/7
= 5 2/7 - 9/14
= 37/7- 9/14
= 74/14- 9/14
= 65/14
= 4 9/14(d)