Question

What should be added to 3 1/5 to get 8 1/5

Answer 1

let added to be x

31/5 + x=81/5

31+5x/5=81/5

31+5x =81

5x=81-31

5x =50

x=10

hence 10 is added 31/5 then to get 81/5

i hope you satisfied