Question

What should be added to 9/20 to get -1/2?

Answer 1

Step-by-step explanation:

Let's take x as the number to be found

9/20 + x = -1/2

x = -1/2 - 9/20

x = (9- 10)/20

x = -1/20

Hope it is useful

Answer 2

Answer:

-19/20

Step-by-step explanation:

lets take another digit =x

9/20 + x= -1/2

lets take 9/20 in another side

x=  - 1/2 - 9/20

now take lcm 20

x=  -10/20 - 9/20

x=  -19/20