How do you add 2 seven 15ths plus 1 four fifths?

Answer 1

2 7/15 + 1 4/5 first find the common denominator, in this case its /15

and since to make the 4/5 into the 15 you have to multiply both top and bottom nubers by 3. making it 1 12/15

2 7/15 + 1 12/15 = 3 19/15 then reduce the fraction 4 4/15