7/9 ÷ 11/5 + 2/9 × 5/11
=7/9 × 5/11 + 2/9 × 5/11
=(7/9 + 2/9) × 5/11
=1×5/11
=5/11
8/9 × [3/4 - (7/16 + 1/4)]
=8/9 × [3/4 - (7/16 + 4/16)]
=8/9 × [12/16 - 11/16]
=8/9 × 1/16
=1/18
[1/2 - (3/4 - 3/5)]÷10
=[1/2 - (15/20 - 12/20)]÷10
=[10/20 - 3/20]÷10
=7/20 × 1/10
=7/200
希望能帮到你!满意请好评^_^
追问哦 还有一道 10×(五分之八-八分之三÷37.5%)
追答同学你好!你的提问已回答完毕,满意请先好评!其他题目请重新提问,答题不易,谢谢配合^_^