Jawabanmu

2014-08-27T20:46:55+07:00
[1+2÷3x4]x[9x7(7-8)÷(6+5)]
=(3÷12)x(9x7(-1)÷11)
=(\frac{1}{4})(9)(-7)(\frac{1}{11}) = -\frac{63}{44}

Semoga membantu