His original amount is represented by x so sam bought 8 baseball cards (x+8) then next day, dog ate 1/2 so we now have 1/2 1/2 was now 25 so we have multily both sides by 2 x+8=50 subtract 8 42=x oriinal amount=42 cards
I'm not sure what the 26 and 44 is there for but I'm guessing u want to multiply so in order to find the difference u got to multiply both sides the subtract so the answer would be 352