2-(1/5+1/3)(3/4-3/5)÷7/10(2/3+2/9)÷20/211-5/14÷5/71/4÷(2/3+1/2)*4/5[8/15-(4/5-3/10]*15/14谁算出这些我加100分!
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/07 10:04:23
2-(1/5+1/3)(3/4-3/5)÷7/10(2/3+2/9)÷20/211-5/14÷5/71/4÷(2/3+1/2)*4/5[8/15-(4/5-3/10]*15/14谁算出这些我加100分
2-(1/5+1/3)(3/4-3/5)÷7/10(2/3+2/9)÷20/211-5/14÷5/71/4÷(2/3+1/2)*4/5[8/15-(4/5-3/10]*15/14谁算出这些我加100分!
2-(1/5+1/3)
(3/4-3/5)÷7/10
(2/3+2/9)÷20/21
1-5/14÷5/7
1/4÷(2/3+1/2)*4/5
[8/15-(4/5-3/10]*15/14
谁算出这些我加100分!
2-(1/5+1/3)(3/4-3/5)÷7/10(2/3+2/9)÷20/211-5/14÷5/71/4÷(2/3+1/2)*4/5[8/15-(4/5-3/10]*15/14谁算出这些我加100分!
2-(1/5+1/3)=2-8/15=30/15-8/15=22/15
(3/4-3/5)÷7/10=3/20 *10/7=3/14
(2/3+2/9)÷20/21=8/9*21/20=14/15
1-5/14÷5/7=1-5/14*7/5=1-1/2=1/2
1/4÷(2/3+1/2)*4/5=1/4÷7/6*4/5=1/4*4/5*6/7=6/35
[8/15-(4/5-3/10)]*15/14=(8/15-1/2)*15/14=1/30*15/14=1/28