【(12+13)
【(1/2+1/3)/1/4】*1/5-1/6(简便运算)的答案
[﹙1/2+1/3﹚÷1/4]×1/5-1/6 =[5/6×4]×1/5-1/6 =5/6×4×1/5-1/6 =4/6-1/6 =1/2
这是加减乘除及括号的运算应用吧!
[(1/2+1/3)/(1/4)]*1/5-1/6 =[(1/2+1/3)/5]*4-1/6 =[(5/6)/5]*4-1/6 =(4/6)-1/6 =3/6=1/2
答:1/2+1/3+1/4+1/5+1/6=(1/2+1/3+1/6)+(1/4+1/5) =1+9/20=29/20详情>>
答:详情>>