Question

$solve \: pls$

Answer 1

1) y 2) x

3) xy
4) yx
5) 99
6) 10y+x
7) 11y
8) x+y

hope this helps you out!

Answer 2

${Answer :-}$

The sum of a two digit number and the number obtained by interchanging its digits is 99.

Let the digit in the unit place be ${y}$.
And that in tens place be ${x}$.

That in tens place be x.
Then the number is ${10x\: + \:y}$.

The number obtained by interchanging its digits is ${ 10y\: + \:x}$.

The sum of there two number is ${99}$.

Therefore, 10x + y + ${10y \: + \: x}$ = 99
Or, 11x + ${11y}$ = 99
Or, ${x\: + \:y}$ = 9

Hope this helps,.

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