42✖️7/5+9/5
更新时间：2021-09-21 02:44:37 • 作者：AMBER •阅读 4424
48✖️9+42✖️9用简便方法？
(48+42)×9
=90×9
=810
5/9➗{(3/7-1/14)✖️7/9}等于多少？
5/9÷(6/14-1/14)*7/9
=5/9÷5/14*7/9
=5/9*14/5*7/9
=14*7/9*9
=98/81
约等于1.21
(48+42)×9
=90×9
=810
5/9÷(6/14-1/14)*7/9
=5/9÷5/14*7/9
=5/9*14/5*7/9
=14*7/9*9
=98/81
约等于1.21