Getting hit by a zombie subtracts 7 seconds, projectiles subtract 5, and bosses subtract 15. The NCAA subtracts sack yardage from individual rushing totals. The formula adds positive stats and subtracts negative ones through a statistical point value system. The Single Step income statement totals revenues and subtracts expenses to find the bottom line. Every spell adds or subtracts a set amount of Ether. Multiplication with the inverse matrix subtracts the corresponding linear combination from the given row. Net debt subtracts financial assets a government holds from the gross debt amount. This signal subtracts from the coherent echo signal. This blend mode simply subtracts pixel values of one layer with the other. The knocking player then subtracts their deadwood points from the defending player's deadwood points. An imaging technique that subtracts two fast spin echo sequences acquired at systole and diastole. It then subtracts the total number of interceptions by the defender. The initial score is 500 and every move subtracts one from the score. One subtracts 200 from 2500 and add 4, and get "x" = 2304. So one subtracts 100"n" from 2500, and then add "n".