Срооочнооо даю 15 баллов 8 целых 5/7+3.15+1 целая 2/7+4.25

8 5/7 + 3,15 + 1 2/7 + 4,25 = 8 5/7 + 3 3/20 + 1 2/7 + 4 1/4 = = 8 100/140 + 3 21/140 + 1 40/140 + 4 35/140 == 8+3+1+4    100+21+40+35/140 = 16 196/140 = 17 56/140 = 17 8/20 = 17 4/10 = 17 2/5 = 17,4