3÷括号1-1⼀2-1⼀4-1⼀7括号等于几除以几

3÷括号1-1/2-1/4-1/7括号等于几除以几
2025-03-20 09:44:07
推荐回答(1个)
回答1:

3÷(1-1/2-1/4-1/7)
=3÷(1/4-1/7)
=3÷3/28
=28