ответ: 1) 2 4/9; 2) 1 7/15; 3) 5/2; 4) 177/40; 5) 41/8; 6) 3 1/4.
Пошаговое объяснение: 1) 2 7/9-1/3= 25/9 - 1/3 = 25/9 -3/9 = 22/9 = 2 4/9;
2) 3 4/5 - 2/3= 19/5 - 2/3 = 57/15 - 35/15 = 22/ 15 = 1 7/15;
3) 4 5/6 - 2 1/3= 29/6 - 7/3 = 29/6 -14/6= 15/6 = 5/2;
4) 6 4/5- 2 3/8= 34/5 - 19/8 = 272/40 - 95/40 = 177/40;
5) 9 1/2 - 4 3/8 = 19/2 - 35/8 = 76/8 - 35/8 = 41/8;
6) 8 19/20 - 5 7/10 = 179/20 - 57/10 = 179/20 - 114/20 = 65/20 = 3 1/4.
(55 + 5) : 5 = 12 60:5=12
5 + 5 + 5:5 = 11 10+1=11
5:5 × 5 + 5 = 10 5+5=10
5 + 5 - 5:5 = 9 10-1=9
5! : (5 + 5 + 5) = 8 120:15=8
5 + (5 + 5) : 5 = 7 5+2=7
(5 + 5 × 5) : 5 = 6 30:5=6
5 + 5 × (5 - 5) = 5 5+0=5
(5 × 5 - 5) : 5 = 4 20:5=4
(5 + 5 + 5) : 5 = 3 15:5=3
5:5 + 5:5 = 2 1+1=2
(5 + 5 - 5) : 5 = 1 5:5=1
5! = 1 × 2 × 3 × 4 × 5 = 120 - факториал 5
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