简便计算:4⼀7×3⼀4+4⼀7×1⼀4 10-2⼀7÷9⼀14-5⼀9 4⼀15×一又四分之三-4⼀15=? 35⼀36×(1⼀5+5⼀7)=?

2025-01-07 02:09:18
推荐回答(1个)
回答1:

简便计算:
4/7×3/4+4/7×1/4
解,得:
==4/7*(3/4+1/4)
==4/7*1
==4/7

10-2/7÷9/14-5/9
解,得:
==10-4/9-5/9
==10-(4/9+5/9)
==10-1
==9

4/15×一又四分之三-4/15
解,得:
==4/15*7/4-4/15
==4/15*(7/4-1)
==4/15*3/4
==1/5

35/36×(1/5+5/7)
解,得:
==(35/36)*(1/5)+(35/36)*(5/7)
==7/36+25/36
==32/36
==8/9