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
