王奶奶养72只鸡，鹅比鸭少38只，鸡比鹅多45只，鸡有多少只？+n/}(t)o6j-T1n8^9A/B6T8u
算式：提示8g0e2}(w;y1H(Z'J:\)f0T'a;F)K(R+n/}(t)o6j-T1n8^9A/B6T8u
答：鸡有3r3x)o/j*g5r8v只。+n/}(t)o6j-T1n8^9A/B6T8u