Jawabanmu

2014-08-26T19:50:15+07:00
[1+2:3x4]x[9x7(7-8):(6+5)]= [3 : 12] x [63 (-1) : (11)]
= [3/12] x [-62/11]
= -31/22 = -1 9/22
maaf kalo salah,,