4÷4/7-4/7÷4像这样的题还有什么 问题补充:7/13÷8+1/8×5/13 9/20÷[1/2
答案:1 悬赏:70 手机版
解决时间 2021-03-22 06:14
- 提问者网友:做自己de王妃
- 2021-03-21 12:06
4÷4/7-4/7÷4像这样的题还有什么 问题补充:7/13÷8+1/8×5/13 9/20÷[1/2
最佳答案
- 五星知识达人网友:妄饮晩冬酒
- 2021-03-21 12:26
4÷4/7-4/7÷4
=7-1/7
=6又6/7
7/13÷8+1/8×5/13
=(7/13+5/13)×1/8
=12/13×1/8
=3/26
9/20÷[1/2×(2/3+4/5)]
=9/20÷(1/2×22/15)
=9/20÷11/15
=27/44
6/7-(4/5-1/7)
=6/7+1/7-4/5
=1-4/5
=1/5
4×3×(3/4+2/3)
=4×3×3/4+4×3×2/3
=9+8
=17
2/3+1/3×9/14+11/14
=2/3+3/14+11/14
=2/3+1
=1又2/3
=7-1/7
=6又6/7
7/13÷8+1/8×5/13
=(7/13+5/13)×1/8
=12/13×1/8
=3/26
9/20÷[1/2×(2/3+4/5)]
=9/20÷(1/2×22/15)
=9/20÷11/15
=27/44
6/7-(4/5-1/7)
=6/7+1/7-4/5
=1-4/5
=1/5
4×3×(3/4+2/3)
=4×3×3/4+4×3×2/3
=9+8
=17
2/3+1/3×9/14+11/14
=2/3+3/14+11/14
=2/3+1
=1又2/3
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