Question

2 digits differ by 3 if interchanged and add to original number we get 143

Answer 1

Answer:

Step-by-step explanation:

let one digits is x

the another digits is y

by condition 1

x - y = 3...................(1)

the second condition

the orginal number = 10x+y

the interchanged number = 10y +x

10x +x + 10y+ y =143

11x +11y = 143

x + y = 13....................(2)

now solve (1) & (2)

x - y =3

x + y =13

------------

2x = 16

x = 8

now sub in(1)

8 - y =3

y = 5