Answer:
i think your answer is c
Explanation:
heres song to remember
weeee will never ever, ever ( add subtract which ever fits best) denominators weee will never ever, ever ( add and subtract ) denominators.
the first one is adding ( wrong)
the second one the number is more than it should be ( wrong)
the third may be its most simplified form ( may be correct )
the fourth same as the second one just the 3 is only simplified. hope its right! :) have a great day! hope you get some points!