Question

Answer 1

`5/11 + 9/20 + (-5)/11 = 5/11 + 9/20 - 5/11 = 9/20 + ( 5/11 - 5/11) = 9/20 + 0 =9/20`

`=> A`

 

`x + 3/7 = (-3)/14`

`x = (-3)/14 - 3/7`

`x=(-9)/14`

`=> A`

 

`x + 1/2 = 3/4`

`x=3/4-1/2`

`x=1/4`

`=> A`

 

`2/5 + (-4)/3 + (-1)/2`

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

`= (-14)/15 - 1/2`

`= (-28)/30 - 15/30`

` = (-43)/30`

`=> D`

Answer 2

`1. A`

`2. A`

`3. A`.

`4. A`.

Answer 3

A A A D

Answer 4

a

a

a

d