(1+3⼀4)÷(1-3⼀4)简便运算

2024-12-25 01:51:46
推荐回答(2个)
回答1:

(1+3/4)÷(1-3/4)
=7/4÷1/4
=7

4/9×9/14÷4/21
=2/7x21/4
=3/2

(1/2-1/6)×3/5÷1/5
=1/3x3/5x5
=1

回答2:

(1+3/4)÷(1-3/4)
=7/4÷1/4
=7
4/9×9/14÷4/21
=2/7x21/4
=3/2
(1/2-1/6)×3/5÷1/5
=1/3x3/5x5
=1