71/2 × 1 1/25 3 1/7 × 1 3/11 1 1/2 × 10 7/9 3 3/8 - вопрос №81810807121125317131111210793381115217245825 от katysid155 08.05.2020 20:50

Question

Математика: 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

katysid155 · Answer

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