Question

The digits of a two digit number differ by 3.If the tens digit be x, then the number is given by ______?
please answer in step by step explanation. ​

Answer 1

Answer:

30 + 11y (or) 10x + y

Step-by-step explanation:

let tens digit = x

and one's digit = y

then number = 10x + y

x - y = 3 (given)

then x = 3+y --- 1

substitute in number: 10x + y

=10(3+y) + y

=30 + 10y + y

=30 + 11y

Therefore, number = 30+9y

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