2700/45怎么递等式巧算
问题描述:
2700/45怎么递等式巧算
要递等式巧算,急,
答
=2700/9/5
=300/5
=60
2700/45怎么递等式巧算
要递等式巧算,急,
=2700/9/5
=300/5
=60