Question

what must be added to 12 upon 13 to get 20 ​

Answer 1

Step-by-step explanation:

let the number be x

x+12/13=20

x=20-12/13

x=20*13/13-12/13

x=260/13-12/13

x=248/13

248/13 is the right answer

Hope it helps ✌✌