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

cách 1 : (7/11+4/11):3/5

=1:3/5

=5/3

cách 2:

35/33+20/33

=55/33

=5/3

h mình nha

nhiều thế ren giải được ma bik giải xng rồi có dc chi hông?

giải đc k mà

nhiều quá

c1

(6/11+5/11)x3/7

=1x3/7

=3/7

c2

6/11 x 3/7+ 5/11 x 3/7

=18/77+15/77

=33/77 rut gon voi 11 = 3/7

a) C1:

7/11 : 3/5 + 4/11 : 3/5 = 7/11 x 5/3 + 4/11 x 5/3

= (7/11 + 4/11) x 5/3

= 1 x 5/3

= 5/3

C2:

7/11 : 3/5 + 4/11 : 3/5 = (7/11 + 4/11) : 3/5

= 1 : 3/5

= 1 x 5/3

= 5/3

b) C1:

(6,24 + 1,26) : 0,75 = 7,5 : 0,75 

= 10

C2:

(6,24 + 1,26) : 0,75 = 6,24 : 0,75 + 1,26 : 0,75

= 8,32 + 1,68

= 10

chúc bạn may mắn

7/11 : 3/5 + 4/11 : 3/5

= (7/11 + 4/11) : 3/5

=1:3/5=5/3

\(\left(\dfrac{7}{11}+\dfrac{4}{11}\right):\dfrac{3}{5}=\dfrac{11}{11}:\dfrac{3}{5}=\dfrac{1}{1}:\dfrac{3}{5}=\dfrac{1}{1}\times\dfrac{5}{3}=\dfrac{5}{3}\)

= (7/11 + 4/11) : 3/5

=1:3/5=5/3

a: \(=\dfrac{7\cdot5+3\cdot9}{45}\cdot\dfrac{2}{3}=\dfrac{62}{45}\cdot\dfrac{2}{3}=\dfrac{124}{135}\)

b: \(=\dfrac{6}{11}\cdot\dfrac{5}{7}=\dfrac{30}{77}\)

c: \(=\dfrac{7}{8}\cdot\dfrac{8-3}{9}=\dfrac{7}{8}\cdot\dfrac{5}{9}=\dfrac{35}{72}\)

yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

\(\text{#TNam}\)

`a, (7/9+3/5) \times 2/3`

`C1:`

`=62/45 \times 2/3`

`= 124/135`

`C2:`

`= 7/9 \times 2/3 + 3/5 \times 2/3`

`= 14/27 +2/5`

`= 124/135`

`b, `

`C1:`

`= 6/11 \times 5/7`

`=`30/77`

`C2:

`= 9/11 \times 5/7-3/11 \times 5/7`

`= 45/77 -15/77`

`= 30/77`

`c,`

`C1:`

`= 7/8 \times 5/9`

`=35/72`

`C2:`

`= 7/8 \times 8/9- 7/8 \times 1/3`

`= 7/9-7/24`

`=35/72`