8÷(-2)²-(-9/5)÷(3/5)²=?8÷(-2)²-(-9/5)÷(3/5)²=2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?8÷(-2)²-(-9/5)÷(3/5)²= 2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?不小心连一块了。

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 16:59:14
8÷(-2)²-(-9/5)÷(3/5)²=?8÷(-2)²-(-9/5)÷(3/5)²=2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?8÷(-2)²-(-9/5)÷(3/5)²= 2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?不小心连一块了。

8÷(-2)²-(-9/5)÷(3/5)²=?8÷(-2)²-(-9/5)÷(3/5)²=2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?8÷(-2)²-(-9/5)÷(3/5)²= 2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?不小心连一块了。
8÷(-2)²-(-9/5)÷(3/5)²=?
8÷(-2)²-(-9/5)÷(3/5)²=2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?
8÷(-2)²-(-9/5)÷(3/5)²= 2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?不小心连一块了。

8÷(-2)²-(-9/5)÷(3/5)²=?8÷(-2)²-(-9/5)÷(3/5)²=2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?8÷(-2)²-(-9/5)÷(3/5)²= 2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)=?不小心连一块了。
8÷(-2)²-(-9/5)÷(3/5)²
=8÷4+9/5×25/9
=2+5
=7
2/3 + 3/5 ÷ (-2/5) - 3/4 × (-4/5)
=2/3-3/5×5/2+3/4×4/5
=2/3 -3/2 +3/5
=(20-45+18)/30
=-7/30