来自康海霞的问题
巧算:123+121×372/372×122-249
巧算:123+121×372/372×122-249
1回答
2020-12-20 03:59
巧算:123+121×372/372×122-249
巧算:123+121×372/372×122-249
如果是的话就这样:
分母=372X122-249
=372X(121+1)-249
=372X121+372-249
=121X372+123=分子
∴原式=1