-5/12+3/8 = -10/24+9/24= -1/24
7/15+(-2/5)= 7/15-6/15=1/15
1. 6*6= 36
2. 5*7= 35
3. 36-35 = 1
4. 5:1 = 5
5. 79-5= 74
1.55
2.94
3.28
4.57
5.69
6.35
7.48
8.66
<span>24 1/14 + 8 3/7 = (x : 1 1/9) * 5 5/12
24 1/14 + 8 6/14 = </span><span>(x : 1 1/9) * 5 5/12
x : 10/9 = 32 1/2 : 5 5/12
65/12 * x = 65/2 * 10/9
x = 650/18 : 65/12
x = 650/18 * 12/65
x = 6 2/3
Проверим:
32 1/2 = 20/3 * 9/10 * 65/12
32 1/2 = 32 1/2
Ответ: {6 2/3}
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