Ответ:
3
Пошаговое объяснение:
7/15 = 56/120. 3/40 = 9/120. 1/24 = 5/120
7/15 - 3/40 - 1/24 = 56/120 - 9/120 - 5/120 = 42/120
42/120 : 0,7 = 6/12 = 0,5
2,4 * 1/3 - 3 = 0,8 - 3 = -2,2
-2,2 * 5/11 = -1
1 5/6 = 11/6. 1 2/3 = 5/3
3/4 = 9/12. 5/3 = 20/12
9/12 - 20/12 = -11/12
11/6 : (-11/12) = -12/6 = -2
4/9 = 16/36. 5/12 = 15/36. 0,75 = 27/36
16/36 - 15/36 + 27/36 = 28/36 = 14/18 = 7/9
7/9 * 3/7 = 3/9 = 1/3
0,5 : (-1) * (-2) : 1/3 = -0,5 * (-6) = 3
По формуле 4/3πr³=4/3*3,14*12³=4/3*3,14*1728=7234,56см³
5) 650
6) 0,673
7)3,2
8)0,0051
<span>7/13+1/13=8/13
</span><span>3/10+1/7=31/70
</span>9/25+2/5=0.76
<span>1/25+3/35=22/175
</span><span>5/7-2/7=3/7
</span><span>7/9-1/4=19/36
</span><span>7/8-5/7=9/56
</span><span>7/24-7/36=7/72</span>