Question

Cứu ai nhanh mà đúng thì mk tích

Answer 1

`6 : 3/5 + 5/7: 2/3`

`= 6 xx 5/3 + 5/7 xx 3/2`

`= 30/3 + 15/14`

`= 10 + 15/14`

`= 140/14 + 15/14`

`= 155/14`

Answer 2

6 :\(\dfrac{3}{5}\)+\(\dfrac{5}{7}\):\(\dfrac{2}{3}\)

=\(\dfrac{30}{3}\)=\(\dfrac{10}{1}\)+\(\dfrac{5}{7}\)

=\(\dfrac{75}{7}\):\(\dfrac{2}{3}\)

= \(\dfrac{155}{14}\)

Answer 3

6 : 3/5 + 5/7 : 2/3

= 6 × 5/3 + 5/7 × 3/2

= 10 + 10/21

= 210/21 + 10/21

= 220/21

Answer 4

155/14