517 6)怎么算,23 5 ( 17 6) ( 3 5) ( 7 6) 怎么算递等式 能算出答案就行了 有负数的我不会 哥哥姐姐帮下忙

2021-03-17 07:12:03 字数 1830 阅读 1233

1楼:买昭懿

23/5+(-17/6)+(-3/5)+(-7/6)= 23/5-17/6-3/5-7/6

= (23/5-3/5)-(17/6+7/6)= 20/5 - 24/6

= 4 - 4= 0

2楼:匿名用户

lhs=23/5-3/5-(17/6+7/6)=0

怎样算简便就怎样算 5.5×17.3+6.7×5.5

3楼:手机用户

(1)5.5×17.3+6.7×5.5,

=5.5×(17.3+6.7),

=5.5×24,

=132;

(2)4×3.09×0.25,

=(4×0.25)×3.09,

=1×3.09,

=3.09;

(3)9.07-22.78÷3.4,

=9.07-6.7,

=2.37.

(1又2/3+2又3/4+3又 4/5+4又5/6)/(3又 1/3+5又2/4+7又3/5+9又4/6)小学生的算法

4楼:新野旁观者

(1又2/3+2又3/4+3又 4/5+4又5/6)÷(3又 1/3+5又2/4+7又3/5+9又4/6)

=(5/3+11/4+19/5+29/6)÷(10/3+22/4+38/5+58/6)

=(5/3+11/4+19/5+29/6)÷【2×(5/3+11/4+19/5+29/6)】

=1÷2

=1/2

5楼:匿名用户

将先带分数华为假分数,再分子分母分别通分,再相加,最后将分母的分数倒过来与分子的分数相乘,即得运算结果.

原式=(5/3+11/4+17/4+29/6)/(10/3+22/4+38/5+58/6) [ 分子分数的公分母为36,分母分数的公分母为120]

=(5*12/3*12+11*9/4*9+17*9/4*9+29*6/6*6)/(10*40/3*40+22*30/4*30+38*24/5*24+58*20/6*20).

=[(60+99+153+174)/36]/[(400+660+912+1160)/120.

=(486/36)/(3132/120.

=135*(120/3132). [486/36=135]

=13.5*10/261,

=261分之135. ---即为所求.

6楼:流沙

两个括号同时乘以公倍数60,值不变。

=(100+165+228+290)/(200+330+456+580)

=1/2

7楼:紫寒凝梦

整数位相加,通分分数相加

一.计算下面各题(递等式) (1).3分之1+9分之7+6分之5+18分之17 (2)11分之6-(11分之6-9分之7)

8楼:强肚很大

1/3+7/9+5/6+17/18

=6/18+14/18+15/18+17/18=52/18

=26/9

=2又8/9

6/11-

(6/11-7/9)

=6/11-6/11+7/9

=0+7/9

=7/9

15-5÷12-7/12

=15-5/12-7/12

=15-(5/12+7/12)

=15-1

=14120÷4-12-9

=30-12-9

=18-9

=9答:高是9厘米。