Question 999024
Well, you can play with all the combinations to find the answer...
83 becomes 38 and decreases by 45...
Otherwise cal the tens digit x and the ones digit y.
x + y = 11
(10x+y)-(10y+x) = 45
9x - 9y = 45 or
x - y = 5
x + y = 11
add the two equations and get
2x = 16
x = 8
y = 3
83