Answer :

Answer:

let to be first no. is = x

second n. Is   = y

According to question

       x +y =78.    .......(i)

       x-y = 16.     .......(ii)

then, from equation second.

we get-   x=16+y ......( iii)

Value of equation third (x=16+y) put in equation first

.   x + y = 78

.    16 + y + y = 78

.      2y =. 78 - 16

.         2y = 62

.            y = 31.      Ans

  From equation (iii)

.          x= 16+ y

.           x = 16 + 31

.            x = 47       .Ans

.  Then finally two value each 47 and 31

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