8 1/2+1 2/5 = 8 5/10+1 4/10 = 8,5+1,4 = 9,9
10 1/4-6 1/5 = 10 25/100-6 2/10 = 10,25-6,2 = 4,05
11 5/8+8 101/125 = 11 625/1000+8 808/1000 = 11,625+8,808 = 20,433
21 15/16-19 3/125 = 21 9375/10000-19 24/1000 = 21,9375-19,024 = 2,9135
Пошаговое объяснение:
8 1/2+1 2/5 = 8 5/10+1 4/10 = 8,5+1,4 = 9,9
10 1/4-6 1/5 = 10 25/100-6 2/10 = 10,25-6,2 = 4,05
11 5/8+8 101/125 = 11 625/1000+8 808/1000 = 11,625+8,808 = 20,433
21 15/16-19 3/125 = 21 9375/10000-19 24/1000 = 21,9375-19,024 = 2,9135
Пошаговое объяснение: