Question

5/7 nhân 2/3 trừ 1/4

3/4 cộng 2/3 chia 1/5

 

 

Answer 1

= 5/4 x 2/3 - 1/4

Answer 2

=10/21-1/4=40/84-21/84=19/84

Answer 3

=10/21-1/4

=19/84

Answer 4

5/7 x 2/3 -1/4

=  10/21-1/4

=   15/84

Answer 5

= 19/84

Answer 6

\(\dfrac{5}{7}\times\dfrac{2}{3}-\dfrac{1}{4}=\dfrac{10}{21}-\dfrac{1}{4}=\dfrac{40}{84}-\dfrac{21}{84}=\dfrac{19}{84}\)

Answer 7

`5/7xx2/3-1/4=10/21-1/4=40/84-21/84=19/84`

Answer 8

1/4

Answer 9

= 10/21 - 1/4 = 19/84

Answer 10

\(\dfrac{5}{7}\times\dfrac{2}{3}-\dfrac{1}{4}=\dfrac{10}{21}-\dfrac{1}{4}=\dfrac{40}{84}-\dfrac{21}{84}=\dfrac{19}{84}\)

\(\dfrac{3}{4}+\dfrac{2}{3}:\dfrac{1}{5}=\dfrac{3}{4}+\dfrac{2}{3}\times5=\dfrac{3}{4}+\dfrac{10}{3}=\dfrac{9}{12}+\dfrac{40}{12}=\dfrac{49}{12}\)