farmer johnson has 3 pigs,10 chickens,and 15 cows. he sold 2 chickens and 3 cows to mrs.wilcox.which experission will help you find the number of animals that

farmer johnson has 3 pigs,10 chickens,and 15 cows. he sold 2 chickens and 3 cows to mrs.wilcox.which experission will help you find the number of animals that farmer johnson has?