# If x48y is exactl

We know that if sum of digits of a number is divisible by 9, then the number is divisible by 9.

Here,

x + 4 + 8 + y = multiple of 9

x + y + 12 = 0, 9, 18, ….

Hence,

x + 11 = 18

x = 7

the least value of x is 7

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