> 数学 >
能简算的要简算1-(5/7+3/14÷3/4)×2/7
人气:260 ℃ 时间:2020-04-18 19:52:24
解答
1-(5/7+3/14÷3/4)×2/7
= 1 - ( 5/7 + 3 / 14 × 4 / 3 ) × 2 / 7
= 1 - ( 5 / 7 + 4 / 14 ) × 2 / 7
= 1 - ( 5 / 7 + 2 / 7 ) × 2 / 7
= 1 - 1 × 2 / 7
= 1 - 2 / 7
= 5 / 7
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版