Answer:
4
Step-by-step explanation:
Let 10x+y be the two digit number. y is the one's digit and x is the ten's digit.
Interchanging the digits gives the new number 10y+x.
We are given when we subtract these numbers we get 36.
(10x+y)-(10y+x)=36
Put like terms together
Remember the terms in the second are being subtracted from the terms in the first
(10x-x)+(y-10y)=36
9x-9y=36
Dividing both sides by 9 gives
x-y=4
The difference between the numbers is 4.
