Question

 

lm bài 2 giúp e ẩm!

 

Answer 1

12/15 +2/3 x9/4= 22/15 x9/4= 3/10

Answer 2

15/2 -3+5/12= 9/2+5/12= 59/12

Answer 3

A) \(\dfrac{12}{15}+\dfrac{2}{3}x\dfrac{9}{4}\)

\(\dfrac{22}{15}x\dfrac{9}{4}\)

\(\dfrac{198}{60}=\dfrac{33}{10}\)

B)\(\dfrac{15}{2}-3+\dfrac{5}{12}\)

\(\dfrac{9}{2}+\dfrac{5}{12}\)

\(\dfrac{59}{12}\)

C)\(18x\dfrac{5}{12}-\dfrac{1}{12}\)

\(\dfrac{15}{2}-\dfrac{1}{12}\)

\(\dfrac{89}{12}\)

 

Answer 4

17/9:2x13/34= 17/18 x13/34= 17/34

Answer 5

`2)`

`12/15 + 2/3 xx 9/4 = 12/15 + 18/12 =4/5 + 3/2 = 8/10 + 15/10=23/10`

`15/2 - 3 + 5/12 = 9/2 +5/12 =59/12`

`17/9 : 2 xx 13/34 = 17/9 xx 1/2 xx 13/34 = 17/18 xx 13/34=13/36`

` 18 xx 5/12 -1/12= 15/2-1/12=90/2-1/12=89/12`

 

Answer 6

18x5/12-1/12= 15/2- 1/12= 89/12 

Answer 7

12/15 +2/3 x9/4= 22/15 x9/4= 3/10

Answer 8

18x5/12-1/12= 15/2- 1/12= 89/12