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简便算法!2/3×3/4+2/3×1/45/4×4/3-1/8÷1/27/15÷(4/3-6/5×1/3)2-8/15×9/161-8/9×3/8×1/75/3-7/8×16/21-1/3(4/5-2/3)÷1/15

题目详情
简便算法!
2/3×3/4+2/3×1/4
5/4×4/3-1/8÷1/2
7/15÷(4/3-6/5×1/3)
2-8/15×9/16
1-8/9×3/8×1/7
5/3-7/8×16/21-1/3
(4/5-2/3)÷1/15
▼优质解答
答案和解析
2/3×3/4+2/3×1/4
=2/3*(3/4+1/4)
=2/3
5/4×4/3-1/8÷1/2
=3/5-1/8*2
=7/20
7/15÷(4/3-6/5×1/3)
=7/15*3/4-7/15*5/2
=7/20-7/6
=-49/60
2-8/15×9/16
=2-3/5
=7/5
1-8/9×3/8×1/7
=1-1/21
=20/21
5/3-7/8×16/21-1/3
=5/3-1
=2/3
(4/5-2/3)÷1/15
=12-10
=2
望采纳,谢谢
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