Verified Answer :

SuperLegend

3 3/5 5/7
Convert the mixed number into a improper fraction.
18/5 5/7
Multiply the numerator(18) by the other numerator(5) while multiplying the denominator(5) by the other denominator(7).
Final Answer: 90/35 or about 2.6 *Both answers are equivalent to each other.

nicolesykeshop

The answer to this would  be 18/7
the way you do this is by converting 3 3/5 into an improper fraction
this would result in 18/5 which you would then multiply by 5/7
you do this multiplying straight across. 
this would give you 90/35
you simplify this by dividing both the numerator and denominator by 5 . giving you the result of 18/7