Question

The sum of two rational number is-7 and one of them is-5/2.Find the other.

Answer 1

let one of the rational no. be x

now ,

x + -5/2 = -7

x = -7 + 5/2

x = -14+5/2

x = -9/2


hence the other rational no. is -9/2,,,

hope it helps !!
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Answer 2

Here's the answer to your question :)

Let the other rational no be x
So,
-5/2+x= -7
x= -7+5/2
Lcm = 2
x= -7x2 + 5/2
x= -14+5/2
x= -9/2