Hi,
7 1/5 is stated in a mixed number
To make it more convenient, change 7 1/5 into a improper fraction which is 36/5
Then you need to add 3/10 with 36/5, but you can't as the denominators are not the same.
So, the common denominator is 10.
Thus, you need to change 36/5 into 72/10 (you must multiply both the denominator and numerator by 2)
Thus, now you can add both the fractions together!

+

=

,
which is also equal to 7 5/10=
7 1/2Hope this helps although it is quite long( i tried to explain it to the fullest)
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