Question

分数混合运算练习题及答案

Answer 1

3/2+4/5-7/6
=45/30+24/30-35/30
=69/30-35/30
=34/30
=17/15
=1 2/15

Answer 2

（1）5.8×4＋86-7.42 答案：101.78
（2）2/3-2/5+2/4 23/30

追问

第二个能给我过程么

追答

通分啊

2/3-2/5+2/4
=40/60-24/60+30/60
=16/60+30/60
=46/60
=23/30