Respuesta :
Answer:
27
Step-by-step explanation:
let the number be 10x+y
so 10x+y=3(x+y)
7x=2,y=7
then 27=3(2+7)=27
Explaination:
Let the number be 10x+y (x is the first digit)
So 10x+y=3(x+y)
7x=2y
If x=2, y=7
Then 27=3(2+7) = 27
Solution:
The number is 27.
Let the number be 10x+y (x is the first digit)
So 10x+y=3(x+y)
7x=2y
If x=2, y=7
Then 27=3(2+7) = 27
Solution:
The number is 27.