Answer:-

17/30

Step By Step Explanation:-

let other fraction be x:-

=7/12+x=3/5

=x=3/5-7/12

=x=((3*12)-(7*5))/60

=x=(36-35)/60

=x=1/60

Difference:-

=7/12-1/60

=((7*5)-(1*1))/60

=35-1/60

=34/60

=(34/2)/(60/2)

=17/30