Step-by-step explanation: First, you subtract 277 from 2861, then divide that by 2 to find how many hits Ricky had. You then add back the 277, and you get Pedro’s hits.
N + 7 means that he is adding 7 songs to the MP3 player n-2 would mean he deleted two songs 4n means he has four times the amount of songs and n/2 means he deleted 1/2 of them
