Question

the digits pf a two-digit number differ by 3. If the digits are intercharged and the resulting number is added to the original number, we get 143. The What can be the original number?

Answer 1

Let the digits be x and x+3.

10x+x+3+10x+30+x=143

22x+33=143

22x=110

X=5

X+3=8

The number is 58(or 85 if we take x and  x-3)