Question

A number consists of tow digits whose sum is 9. If 27 is subtracted from the number its digits are reversed. Find the number ​

Answer 1

Step-by-step explanation:

Letter. x+y=9.(1) 10x+y-27=10y+X. 9x-9y=27 9(x-y)=27 x-y=3

add(1) and (2)

2x=12

x=12/2

x=6

y=3