Question

The sum of two rational number is -3/5 if one the number is -9/20 find the other

Answer 1

Heya☺

Let the no. be x

Then ,
According to question,

x + (-9/20) = -3/5

x = -3/5 + 9/20
x ={ -12 + 9} ÷ 20
x = -3/20

Hence , the other no. is -3/20

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Answer 2

First Number = -9/20
Sum of Numbers = -3/5
Let Second no be x

= x - 9/20 = -3/5
  x = 9/20 - 3/5
  x = 9-12/20
  x = -3/20

Hence, Other Number = -3/20