6-7⼀15-4⼀9能简算的要简算?

2024-11-22 22:10:36
推荐回答(4个)
回答1:

6-7/15-4/9
=6-(7/15+4/9)
=6-(21/45+20/45)
=6-41/45
=5又4/45

回答2:

原式=6-(7/15+4/9)
=6-41/45
=5+45/45-41/45
=5+4/45
=229/45

回答3:

原式
=6-(7/15+4/9)
=6-(21/45+20/45)
=6一41/45
=5又4/45

回答4:

解:简便运算如下:
6-7/15-4/9
=6-[(7x3)/(15x3)+(4x5)/(9x5)]
=6-[21/45+20/45]=6-41/45
=5又45/45-41/45
=5又4/45