Answer :

Let the numbers are X and Y


According to the problem,


X + Y = 84 …. (1)


X – Y = 30 …..(2)


Now minus 2nd equation from 1st,


2X =84 - 30


2X = 54


X = 54/2


X = 27


Now put the value of X in the 1st equation,


X + Y = 84


27 + Y = 84


Y = 84 – 27


Y = 57


The value of X and Y are 27 and 57

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