16⼀21×3⼀4加11⼀21成3⼀4减3⼀4等于

2024-12-29 05:45:17
推荐回答(1个)
回答1:

16/21×3/4加11/21成3/4减3/4
=16/21×3/4+11/21x3/4-3/4
=(16/21+11/21-1)x3/4
=(27/21-21/21)x3/4
=6/21x3/4
=1/7x3/2
=3/14