71/2 × 1 1/25 3 1/7 × 1 3/11 1 1/2 × 10 7/9 3 3/8 × 1 1/15 2 1/7 × 2 4/5 8 2/5 × 6 3/7 4 2/13 × 2 1/6 7 2/9 × 2 3/27 5/6 от числа 16,132,1260 8/11 от числа 363,2,74

Ответ:

nasti2125

07.10.2020 04:47

7 1/2 × 1 1/25 = 15/2 * 26/25 = 39/5 = 7 4/5,

3 1/7 × 1 3/11 = 22/7 * 14/11 = 2 * 2 = 4,

1 1/2 × 10 7/9 = 3/2 * 97/9 = 97/6 = 16 1/6,

3 3/8 × 1 1/15 = 27/8 * 16/15 = 18/5 = 3 3/5,

2 1/7 × 2 4/5 = 15/7 * 14/5 = 2 * 3 = 6,

8 2/5 × 6 3/7 = 42/5 * 45/7 = 6 * 9 = 54,

4 2/13 × 2 1/6 = 54/13 * 13/6 = 54/6 = 9,

7 2/9 × 2 3/27 = 65/9 * 57/27 = 3705/243 = 15 60/243 = 15 20/81,

5/6 от числа 16,132,1260:
5/6 * 16 = 40/3 = 13 1/3,
5/6 * 132 = 5 * 22 = 110,
5/6 * 1260 = 5 * 210 = 1050,

8/11 от числа 363,2,74:
8/11 * 363 = 8 * 33 = 264,
8/11 * 2 = 16/11 = 1 5/11,
8/11 * 74 = 592/11 = 53 9/11

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Ответ:

katya2562

07.10.2020 04:47

$7 \frac{1}{2}*1 \frac{1}{25}= \frac{15}{2}* \frac{26}{25}= \frac{9}{5}=1 \frac{4}{5}$
$3 \frac{1}{7}*1 \frac{3}{11}= \frac{22}{7}* \frac{14}{11}=2*2=4$
$1 \frac{1}{2} *10 \frac{7}{9}= \frac{3}{2}* \frac{97}{9}= \frac{97}{6}=16 \frac{1}{6}$
$3 \frac{3}{8}*1 \frac{1}{15}= \frac{27}{8}* \frac{16}{15}= \frac{54}{15}=3 \frac{3}{5}$
$2 \frac{1}{7}*2 \frac{4}{5}= \frac{15}{7}* \frac{14}{5}=2*3=6$
$8 \frac{2}{5}*6 \frac{3}{7}= \frac{42}{5}* \frac{45}{7}=6*9=54$
$4 \frac{2}{13}*2 \frac{1}{6}= \frac{54}{13}* \frac{13}{6}= \frac{54}{6}=9$
$7 \frac{2}{9}*2 \frac{3}{27}= \frac{65}{9}* \frac{57}{27}= \frac{1235}{81}=15 \frac{20}{81}$

$16* \frac{5}{6}= \frac{40}{3}=9 \frac{4}{3}$
$132* \frac{5}{6}= 22*5=110$
$1260* \frac{5}{6}=210*5=1050$

$363* \frac{8}{11}=33*8=264$
$2* \frac{8}{11}= \frac{16}{11}=1 \frac{5}{11}$
$74* \frac{8}{11}= \frac{592}{11}=53 \frac{9}{11}$