Question

帮我算一下，3Q

Answer 1

5.4÷[14.65-（11.65+2.1）]
=5.4÷[14.65-11.65-2.1]
=5.4÷0.9
=6

追问

第一个不用算！没看见我已经算出来了吗？？？

追答

9.6-11÷7+1/7×4
=9.6-11×1/7+1/7×4
=9.6-1/7×(11-4)
=9.6-1
=8.6

我帮你用简便了

追问

第一题不用简便

追答

4/13×[1-(3/4-3/8)]
=4/13×[1-3/8]
=4/13×5/8
=5/26

36÷［（5/6-1/3）×3］
=36÷[1/2×3]
=36÷3/2
=24

（1/6+1/4-1/12）×24
=1/6×24+1/4×24-1/12×24
=4+6-2
=8

追问

直接帮我算第二题的第二道

追答

2.5×3.2×1.25
=(2.5×4)×(0.8×1.25)
=10×1
=10

采纳

8/17÷23+1/23×9/17
=8/17×1/23+1/23×9/17
=（8/17+9/17）×1/23
=1×1/23
=1/23

好评呢

2.5×3.2×12.5
=(2.5×4)×(0.8×12.5)
=10×10
=100

Answer 2