Question

a number consist of two digits whose sum is 9 lf27 is subtracted from the it's digits are reversed find the n.o​

Answer 1

Answer:

Step-by-step explanation:

xy is the digit

x+y =9 ............1 st equation

given

10x+y -27 =10y +x

9x - 9y =27

x-y =3 .............2 nd equation

add 1st equation and 2nd equation

x+y=9

x-y=3

y gets cancelled ,

2x=12

x=6

substitute x in 1st equation then

6+y=9

y=3 so ,

number is 63