解:原式=(-5-9+17-3)+(-5/6 -2/3 +3/4 -1/2)【注:把整数与整数相加减,分数与分数相加减】
=(-5/6 -4/6 +3/4 -2/4)
=(-3/2 +1/4)
=(-6/4 +1/4)
=-5/4
【俊狼猎英】团队为您解答
解:原式=(-5-9+17-3)+(-5/6
-2/3
+3/4
-1/2)【注:把整数与整数相加减,分数与分数相加减】
=(-5/6
-4/6
+3/4
-2/4)
=(-3/2
+1/4)
=(-6/4
+1/4)
=-5/4
【俊狼猎英】团队为您解答
-5又5/6-9又2/3+17又3/4-3又1/2
=17又3/4-(5又5/6+9又2/3+3又1/2)
=71/4-(35/6+29/3+7/2)
=213/12-(70/12+116/12+42/12)
=213/12-228/12
=-15/12
=-5/4