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![](https://rs.olm.vn/images/avt/0.png?1311)
C1 = ( 85,35 + 63,05 ) : 5
= 148,4 : 5
= 29,68
C2 : = 17,07 + 12,61
= 29,68
Hok tốt
85, 35 : 5 + 63, 05 : 5
C1: = 17, 07 + 12, 61
= 29, 68
C2 = ( 85, 35 + 63, 05 ) : 5
= 148,4 : 5
-= 29, 68
![](https://rs.olm.vn/images/avt/0.png?1311)
Cách 1:
85,35 : 5 + 63,05 : 5
= 17,07 + 12,61
= 29,68
Cách 2 :
85,35 : 5 + 63,05 : 5
= ( 85,35 + 63,05 ) : 5
= 148,4 : 5
= 29,68
^_^ hok tốt ^_^
![](https://rs.olm.vn/images/avt/0.png?1311)
Cách 1 :
85,35 : 5 + 63,05 : 5
= 17,07 + 12,61
= 29,68
Cách 2 :
85,35 : 5 + 63,05 : 5
= ( 85,35 + 63,05 ) : 5
= 148,4 : 5
= 29,68
Cách 1 :
85,35 : 5 + 63,05 : 5 = 17,07 + 12,61 .
= 29,68 .
Cách 2 :
85,35 : 5 + 63,05 : 5 = ( 85,35 + 63,05 ) : 5 .
= 148,4 :5 .
= 29,68 .
![](https://rs.olm.vn/images/avt/0.png?1311)
* Cách 1:
64: 5 + 36 : 5
= 12, 8 + 7,2
= 20
* Cách 2:
64 : 5 + 36 : 5
= (64 + 36) : 5
= 100 : 5
= 20
![](https://rs.olm.vn/images/avt/0.png?1311)
C1 : 64 : 5 + 36 : 5
= ( 64 + 36 ) : 5
= 100 : 5
= 20
C2 : 64 : 5 + 36 : 5
= 12.8 + 7.2
= 20
![](https://rs.olm.vn/images/avt/0.png?1311)
Cách 1 :
64 : 5 + 36 : 5
= (64 + 36 ) : 5
= 100 : 5
= 20
Cách 2 :
64 : 5 + 36 : 5
= 12,8 + 7,2
= 20
hok tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
C1:(9/5+8/5):17/15=17/5:17/15=3(nhớ bình chọn nha)
C2;27/17+24/17=3(nhớ bình chọn nha)
cách 1: \(\frac{9}{5}:\frac{17}{15}+\frac{8}{5}:\frac{17}{15}=\frac{9}{5}.\frac{15}{17}+\frac{8}{5}.\frac{15}{17}=\frac{15}{17}.\left(\frac{9}{5}+\frac{8}{5}\right)=\frac{15}{17}.\frac{17}{5}=3\)
cách 2: \(\frac{9}{5}:\frac{17}{15}+\frac{8}{5}:\frac{17}{15}=\frac{9}{5}.\frac{15}{17}+\frac{8}{5}.\frac{15}{17}=3.\frac{3}{17}+8.\frac{3}{17}=\frac{27}{17}+\frac{24}{17}=\frac{51}{17}=3\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Cách 1: 7/11:3/5+4/11:3/5
=35/33+20/33
=1/2/3
=5/3
Cách 2:7/11:3/5+4/11:3/5
=(7/11+4/11):3/5
=11/11:3/5
=1:3/5
=5/3
`#3107.101107`
`85,35 \div 5 + 63,05 \div 5`
`= 17,07 + 12,61`
`= 29,68`
____
`85,35 \div 5 + 63,05 \div 5`
$= 85,35 \times \dfrac{1}{5} + 63,05 \times \dfrac{1}{5}$
$= \dfrac{1}{5} \times (85,35 + 63,05)$
$= \dfrac{1}{5} \times 148,4$
$= 0,2 \times 148,4$
$= 29,68$
Cách 1:
85,35 : 5 + 63,05 : 5
=17,07 + 12,61
=29,68
Cách 2:
85,35 : 5 + 63,05 : 5
= (85,35+63,05) :5
=148,4 : 5
=29,68