Jawabanmu

2014-04-18T21:04:44+07:00
= [2/3 - 12/3] - [2/3 - 9/3] 
= [-10/3] - [-7/3]
= -3/3
= -1
2014-04-18T21:05:13+07:00
(2/3 - 4 ) - ( 2/3 -3) : (2/3 - 12/3) - ( 2/3 - 9/3) -10/3 -(-7/3) -10/3 + 7/3 -3/3 -1