Question

ПЖ ДРОБИ Спаситееее Жизнине необходимого дроби это дроби ддддррроооббббииии::(((((((​

Answer 1

Пошаговое объяснение:

№1

1) 4 1/2 - 2 1/19 = 4 19/38 - 2 2/38 = 2 17/38

2) 2,375 : (3/4)² = 2 3/8 : 9/16 = 19/8 * 16/9 = 19/1 * 2/9 = 38/9

3) 2 17/38 * 38/9 = 93/38 * 38/9 = 31/1 * 1/3 = 31/3 = 10 1/3

№2

1) 4 9/25 - 3 13/20 = 4 36/100 - 3 65/100 = 3 136/100 - 3 65/100 = 71/100

2) (2/3)³ * 1 11/16 = 8/27 * 27/16 = 1/1 * 1 2 = 1/2

3) 1/2 * 71/100 = 71/200

Answer 2

Ответ:

Пошаговое объяснение:

1) 2,375 : (3/4)² * 4 1/2 - 2 1/19 = 10 1/3

1) 2,375 : (3/4)² = 2 3/8 : (3/4 * 3/4) = 2 3/8 : 9/16 = 19/8 * 16/9 = 304/72 = 38/9

2) 4 1/2 - 2 1/19 = 4 19/38 - 2 2/38 = 2 17/38

3) 2 17/38 * 38/9 = 93/38 * 38/9 = 93/9 = 10 1/3

2) (2/3)³ * 1 11/16 + (4 9/25 - 3 13/20) = 0,355

1) (2/3)³ * 1 11/16 = (2/3 * 2/3 * 2/3) * 1 11/16 = 8/27 * 27/16 = 1/2

2) 4 9/25 - 3 13/20 = 4 36/100 - 3 65/100 = 3 136/100 - 3 65/100 = 71/100

3) 1/2 * 71/100 = 71/200 = 0,355