How to change an unknown 2 digit number to algebra ?

34 =  10 x 3 +  1 x 4

How to change an unknown 2 digit number to algebra ?

let the number in the tens place be x
10 x x = 10x

let the number in the tens place be y
1 x y = y

Thus the value of the unknown 2 digit number is 10x + y


Question


Give me algebra of a unknown 3 digit number !