Question

Forty-three girls went camping. The girls were able to choose to participate in karate and swimming. Twenty-one girls went swimming, eight participated in both activities, and seven girls did neither. How many girls only did karate?
Help PLEASE

Answer 1

7 girls participated only in Karate.
21 + 8 = 29
29 + 7 = 36
36 + 6 = 43

Answer 2

42-21=21
21-8=13
13-7=6

6 girls