五分之三除以[〔五分之一加三之一〕除以九分之二]

2024-11-16 12:01:40
推荐回答(4个)
回答(1):

回答(2):

解:3/5÷[〔1/5+1/3〕]÷2/9
=3/5÷[〔3/15+5/15〕]÷2/9
=3/5÷8/15÷2/9
=3/5×15/8×9/2
=9/8×9/2
=81/16

回答(3):

3/5÷[(1/5+1/3)÷2/9]
=3/5÷(8/15x9/2)
=3/5÷12/5
=3/5x5/12
=1/4

回答(4):

=3/5÷(8/15×9/2)
=3/5×5/12
=1/4