Explanation:
So what you should do is open up the brackets of the top row, and to open up brackets with addition inside simply multiply the outside number with the two inside numbers. This would result in:
First Column: 5(5+7) = 5*5 + 5*7 = 25 + 35
Second Column: 5(5+8) = 5*5 + 5*8 = 25 + 40
Third Column: 7(4+5) = 7*4 + 7*5 = 28 + 35
Fourth Column: 14(2+3) = 14*2 + 14*4 = 28 + 42
Fifth Column: 15(2+3) = 15*2 + 15*3 = 30 + 45