1樓:匿名使用者
原式=4/15×5/6÷(13/9-5/9)=1/6÷8/9
=1/6×9/8
=3/16。
4/15除以括號13/9-2/3×5/6括號等於多少?
2樓:痞子
4/15除以括號13/9-2/3×5/6括號等於3/10
3樓:新野旁觀者
4/15÷(13/9-2/3×5/6)
=4/15÷(13/9-5/9)
=4/15÷8/9
=3/10
4/15÷(13/9-2/3×5/6)+5/6
4樓:涼念若櫻花妖嬈
=4/15%(13/9-2/3*5/6)
=4/15%(13/9-5/9)
=4/15%8/9
=3/10
不好意思,不會打乘除號,%代表除,*代表乘
5樓:匿名使用者
=4/15÷(13/9-2/3×5/6)
=4/15÷(13/9-5/9)
=4/15÷8/9
=3/10
能簡便的就簡便計算 5/7+5/6+2/7+1/6= 1/15*(1/3+1/12) 1/4/(3-5/13-8/13) 4/9/【5/6-(1/6+1/3)】
6樓:匿名使用者
5/7+5/6+2/7+1/6=(5/7+2/7)+(5/6+1/6)=1+1=2
1/15*(1/3+1/12)=1/15(4/12+1/12)=1/15*5/12=1/36
1/4/(3-5/13-8/13)=1/4/(3-1)=1/4/2=1/8
4/9/【5/6-(1/6+1/3)】=4/9/(5/6-1/6-1/3)=4/9/(4/6-1/3)=4/9/(1/3)=4/3
其實你應當自己做,不會就應努力學,不學永遠不會。
7樓:surfer男孩
5/7+5/6+2/7+1/6= 5/7+2/7+5/6+1/6=1+1=2
1/15*(1/3+1/12) =1/15*(4/12+1/12)=1/15*5/12=1/36
1/4/(3-5/13-8/13)=1/4/[3-(5/13+8+13)]=1/4/[3-1]=1/8
4/9/【5/6-(1/6+1/3)】=4/9[5/6-1/6-1/3]=4/9/1/3=4/3
13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9*5/6+4/9÷6/5 4÷4/5-4/5÷4 7/11÷<2/5(1-7/10)>
8樓:兗礦興隆礦
13/14-15/28÷5/8
=13/14-15/28*8/5
=13/14-15*8/(28*5)
=13/14-3*4/14
=1/14
(5/6-3/4)÷3/8
=1/12*8/3
=2/9
5/9*5/6+4/9÷6/5
=25/ 54+20/54
=5/6
4÷4/5-4/5÷4 7/11÷<2/5(1-7/10)>=5-4/5*11/47/(2/5*3/10)=5-4*11/(5*47)*25/3
=5-4*11*25/(5*4*3)
=5-11*5/3
=5-18又1/3
=13又1/3 .
(簡算) (7/15-1/3)÷(1/3+1/5) (3/4+1/2)÷5/8 2/13+3/4÷9/10+1/6 [3/4-(5/8-1/4)]÷3/8
9樓:妙酒
(7/15-1/3)÷(1/3+1/5)
=(7-5)÷
(5+3)
=1/4
(3/4+1/2)÷5/8
=3/4x8/5+1/2x8/5
=6/5+4/5
=22/13+3/4÷9/10+1/6
=2/13+5/6+1/6
=2/13+1
=1又2/13
[3/4-(5/8-1/4)]÷3/8
=(3/4+1/4-5/8)x8/3
=3/8x8/3=1
用簡便方法計算:5/6-4/9+1/6-2/9=? 13/15-7/112/15+6/11=? 7/15-1/4+8/15-3/4=?
10樓:超電炮姐
5/6-4/9+1/6-2/9
=5/6+1/6-4/9-2/9
=1-6/9
=3/9
=1/3
13/15-7/112/15+6/11
這個題你輸錯了吧
應該是 13/15-7/11+2/15+6/11=13/15+2/15-7/11+6/11=1-1/11
=10/11
7/15-1/4+8/15-3/4
=7/15+8/15-1/4-3/4
=1-1
=4/12
=1/3
0.7+11/15-3/10+4/15
=7/10-3/10+11/15+4/15=4/10+1
=1.4
11樓:李佳宇大王
簡便計算:
5/6-4/9+1/6-2/9
=(5/6+1/6)-(4/9+2/9)
=1-2/3
=1/3
13/15-7/11+2/15+6/11
=(13/15+2/15)-(7/11-6/11)=1-1/11
=10/11
7/15-1/4+8/15-3/4
=(7/15+8/15)-(1/4+3/4)=1-1
=011/12-1/18+5/12-17/18=(11/12+5/12)-(1/18+17/18)=4/3-1
=1/3
0.7+11/15-3/10+4/15
=7/10+11/15-3/10+4/15=(7/10-3/10)+(11/15+4/15)=2/5+1
=1又2/5
(望採納,謝謝)
脫式計算 5-5/14÷3/4+22/7 76.3×5/9+27-4/5 13/50÷8/15÷34/40 6.2÷9/5 6.2÷9/6+2.5×5/9 化
12樓:辛新土
計算2.4:0.75
=2.4x4/3
=3.2
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