Question

1 вариант Срочно пжпжжпжп

Answer 1

Ответ:

1.

1) 1/16

2) 51/60

3) 23/24

4) 2

2. хз

3.

1) х = 29/52

2) х = 20. 10/15

Answer 2

Пошаговое объяснение:

№1

1) 11/16 - 5/8 = 11/16 - 10/16 = 1/16

2) 4/15 + 7/12 = 8/60 + 35/60 = 43/60

3) 7/8 + 11/12 - 5/6 = 21/24 + 22/24 - 20/24 = (21+22-20)/24 = 23/24

4) 7 9/20 - 5 17/30 = 7 27/60 - 5 34/60 = 6 87/60 - 5 34/60 = 1 53/60

№2

1) 3 1/9 - 61/63 = 3 7/63 - 61/63 = 2 70/63 - 61/63 = 2 9/63 = 2 1/7 (дм) - вторая сторона прямоугольника

2) 2 * (3 1/9 + 2 1/7) = 2 * (3 7/63 + 2 9/63) = 2 * 5 16/63 = 2 * 331/63 = 662/63 = 10 32/63 (дм) - периметр прямоугольника

№3

а)

х/52 - 4/13 = 1/4

х/52 = 1/4 + 4/13

х/52 = 13/52 + 16/52

х/52 = 29/52

х = 29/52 * 52

х = 29/1 * 1

х = 29/1

х = 29

б)

х - 18 1/5 = 2 7/15

х = 2 7/15 + 18 1/5

х = 2 7/15 + 18 3/15

х = 20 10/15

х = 20 2/3