Jawapan

2015-05-11T22:43:54+08:00
-4(3+×)+5×+3 = -9×-2(×-5) -12-4×+5×+3 = -9×-2×+10 ×-9 = -11×+10 ×+11× = 10+9 12× = 19 × = 19/12 #
2015-05-13T22:38:27+08:00