6分之5减[(5分之1加3分之1)除以9分之8]等于多少?

2024-11-02 21:29:43
推荐回答(3个)
回答(1):

可以用简便计算:
5/6-(1/5+1/3)÷8/9
=5/6-(1/5×9/8+1/3×9/8

=5/6-3/5
=7/30

得出等于7/30

回答(2):

解:5/6-[(1/5+1/3)÷8/9]
=5/6-[(3/15+5/15)÷8/9]
=5/6-[8/15÷8/9]
=5/6-8/15×9/8
=5/6-3/5
=25/30-18/30
=7/30

回答(3):

5/6-【(1/5+1/3)÷8/9】
=5/6-(8/15÷8/9)
=5/6-3/5
=7/30