简算 1⼀4*8⼀9÷(3⼀4-5⼀12) 1-5⼀6÷15⼀16*3⼀16

2025-03-16 06:42:24
推荐回答(1个)
回答1:

1/4*8/9÷(3/4-5/12) 1-5/6÷15/16*3/16
=
1/4*8/9÷(9/12-5/12) -5/6*16/15*3/16
=1/4*8/9÷4/12 -5/6*16/15*3/16
=1/4*8/9*3-5/6*16/15*3/16
=2/3-1/6
=3/6=1/2