-5-[-1⼀5-(l-l⼀5x3⼀5)÷(-2)05等于什么?

-5-[-1/5-(l-l/5x3/5)÷(-2)05等于什么?
2024-11-25 20:45:25
推荐回答(1个)
回答1:

-5-[-1/5-(1-1/5x3/5)÷(-2)²
=-5-[-1/5-(1-3/25)÷4
=-5-[-1/5-22/25)÷4
=-5+27/25÷4
=-5+27/100
=-4又73/100