7/13<a<8/13, 7/13=21/39, 8/13=24/39.
21/39<a<24/39, a=22/39, 23/39/
15+7=22 (лисицы), кабанов тоже 22;
15+22+22=59 (зверей всего).
Ответ: 59 зверей поймал барон.
3 1/8+2 1/7 = 5 +(7/56+8/56)= 5 15/56
5 1/6+1 2/3= 6 +(1/6+4/6)= 6 5/6
5- 2 1/3= 4 3/3-2 1/3=2 2/3
8 1/7-3 1/9= 5 +(9/63-7/63)=5+2/63= 5 2/63
3/4х = (6/5) / (4/3)
3/4х = (6*3)/(5*4)
3/4х = (18/20) / (3/4)
х = 6/5 = 1 целая 1/5