Question

The sum of digit of a 2-digit
number is 11.lf 9 is added to the
number, its digits are reversed find
the number​

Answer 1

Step-by-step explanation:

Let the number be 10y+x

x+y=11....(1)

10y+x+9=10x+y

9y-9x=-9

y-x=-1......(2)

From (1),x=11-y

Put x in (2)

y-11+y=-1

2y=10

y=5

x=6

Number=56

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