What is the next fraction in this sequence? 2/3, 3/5, 8/15, 7/ simplify the answer

12/17 I think but but but I didn't Kristen's Rufus a ejfrne endorse w dkdidhw enfiduw. Cc

So the common denominator is 15, so 2/5 will turn into 10/15, 3/5 will turn into 9/15, 8/15 will stay the same, and 7/5 into 21/15. Now we need to add 
10/15 + 9/15 + 8/15 + 21/15 = 48/15 which then we can simplify by dividing them by 3 which is 16/5 = 3 1/5. So the answer is 3 1/5. Hope it helps :))!