这两道题怎么做,急急急急急急

2024-12-17 18:22:44
推荐回答(1个)
回答1:

(+13(2/5)+7(3/5))-(55(1/6)+14(5/6))+11.702
=21-70+11.702
=-71+32.702
=-38.298

4(2/3)-3(2/3)-(7/5+13/5)+8.6
=1-4+8.6
=5.6