1减去3⼀5的差除2⼀3乘6⼀7的积,商是多少?

2024-11-24 01:55:42
推荐回答(1个)
回答1:

1.(1-3/5)/(2/3*6/7)
=(2/5)/(6/7)
=7/15
(2/7)/(4/5-2/3)
=2/7/(2/15)
=2/7*15/2
=15/7
33/(1-1/2-1/3)
=33/(1/6)
=198m