what is the pair of numbers that sum to 21 and difference to 5?

1 thought on “what is the pair of numbers that sum to 21 and difference to 5?”

1. Step-by-step explanation:

   let 1st no. = X

   let 2nd no. = y

   sum of no. = 21

   x+y= 21

   x= 21-y (let us take it as 1st equation.)

   now…

   their difference = 5

   x-y= 5

   x= 5+y (let us assume it as 2nd equation.)

   now..adding both equations..we get

   x+x= 21-y+5+y

   2x= 21+5

   2x= 26

   x= 26/2

   x= 13

   as we know x-y= 5

   putting X = 13

   13-y= 5

   y= 8

   so,pair of no. is 13 and 8

   hope it helps..

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