Question

what should we subtracted from-9/20 to get-1/5​

Answer 1

Answer:

Let the no. to be subtracted be x

-9/20 - x = -1/5

-9/20 + 1/5 = x

-9+4/20 = x

x = -5/20

x = -1/4

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Answer 2

Answer:

x=-1/4

Step-by-step explanation:

let,

the subtracting no. =x

now,

-9/20 -x =-1/5                                

or, (-9-20x)/20 = -1/5

or, 5(-9-20x)=20×(-1)

or, -45 - 100x =-20

or, -45+20=100x

or, 100x=-25

or, x=-25/100

x= -1/4 ans