13/15减1/3减1/5(简便计算)
13/15减1/3减1/5(简便计算)
日期:2021-06-23 11:13:44 人气:1
13/15-1/3-1/5
=(3/15+10/15)-1/3-1/5
=1/5+2/3-1/3-1/5
=(1/5-1/5)+(2/3-1/3)
=0+1/3
=1/3
【为了表达清楚,
所以写了很多步,可以简化成:
13/15-1/3-1/5
=1
=(3/15+10/15)-1/3-1/5
=1/5+2/3-1/3-1/5
=(1/5-1/5)+(2/3-1/3)
=0+1/3
=1/3
【为了表达清楚,
所以写了很多步,可以简化成:
13/15-1/3-1/5
=1