..................................................
6 1/8 - 2 3/8 = 49/8 - 19/8 = 30/8 = 15/4 = 3 3/4 = 3,75
1)5 1/2+3 5/6=5 3/6+3 5/6=9 1/3
2)7 11/12+13 5/6=7 11/12+13 10/12=
21 3/4
3)14 7/9+10 2/3=14 7/9+10 6/9=
25 4/9
4)12 9/40-8 4/20=12 9/40-8 8/40=
4 1/40
5)10 19/32-6 2/4=10 19/32-6 16/32=
4 3/32
6)3 3/4+9 7/9=3 27/36+9 28/36=
13 19/36
7)2 7/9-2/3=2 7/9-6/9=2 1/9
8)13 7/24+1 3/8=13 7/24+1 9/24=
14 2/3
Лучи:
1) ВА, CD, CA, BD - 4 луча.
2) FE, KE, MN, KN, FN, ME - 6 лучей.