能简算的要简算8/9×(5/9-1/4)×8/11 4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)

问题描述:

能简算的要简算8/9×(5/9-1/4)×8/11 4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)
4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)

能简算的要简算
8/9×(5/9-1/4)×8/11
=8/9×(11/36×8/11)
=8/9×2/9
=16/81
4/9×(3/10-5/6×3/10)
=4/9×(3/10-1/4)
=4/9×1/20
=1/45
3/8×(3/5-1/3×3/10)
=3/8×(3/5-1/10)
=3/8×1/2
=3/16第一个不对啊,答案上写四分之1那是你的题目有问题,应该是:9/8×(5/9-1/4)×8/11 =9/8×(11/36×8/11)=9/8×2/9=1/4哦,是我的疏忽,对不起,谢谢你hh