8+4-9/5-7 等于多少?
问题描述:
8+4-9/5-7 等于多少?
答
你好!
8+4-9/5-7
=8+4-1.8-7
=12-1.8-7
=10.2-7
=3.2
祝你学习进步,望采纳,谢谢!1O(∩_∩)O~