(2⼀3 4⼀15×5⼀6)÷20⼀11

2024-12-26 01:03:11
推荐回答(1个)
回答1:

(2/3+ 4/15×5/6)÷20/11
=(2/3+2/9)x11/20
=(6/9+2/9)x11/20
=8/9x11/20
=22/45