> 数学 >
99又79/89/(-10)简算
人气:261 ℃ 时间:2020-04-21 22:07:22
解答
99又79/89/(-10)
=(100-80/89)÷-10
=80/89÷10-100÷10
=8/89-10
=-9又81/89
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版