1 вариант
1 задание / это риска дробу
1- 32/63
2- 7/10
3- 2/5
4- 2 целых 11/98
5- 18
6- 1/64
7- 1 целых 1/20
8-11 целых 15/27
2 задание
1- х - 30
2- х- 1/20
3- x- 1/25
4- x- 1 целых 2/9
Пошаговое объяснение:
Пошаговое объяснение:
4/9 : 7/8 = 4/9 * 8/7 = 32/63
6/25 : 12/35 = 6/25 * 35/12 = 7/10
8/65 : 4/13 = 8/65 * 13/4 = 2/5
48/49 : 32/63 = 48/49 * 63/32 = 27/14 = 1 13/14
10 : 5/9 = 10 * 9/5 = 18
9/16 : 36 = 9/16 * 1/36 = 1/64
3 1/3 : 2 6/7 = 10/3 : 20/7 = 10/3 * 7/20 = 7/6 = 1 1/6
3 6/9 : 9/28 = 11/3 * 28/9 = 308/27 = 11 11/27
(5/9)x = 25
x = 25 * 9/5
x = 45
x : 8/25 = 5/32
x = 5/32 * 8/25
x = 1/20
(3 3/4)x - 1 2/3 = 2 11/12
(3 3/4)x = 2 11/12 + 1 2/3
(3 3/4)x = 2 11/12 + 1 8/12
(3 3/4)x = 3 19/12
x = 3 19/12 : 3 3/4
x = 55/12 * 4/15
x = 11/9
x = 1 2/9
5/7 : 4/5 = 5/7 * 5/4 = 25/28
6/35 : 18/49 = 6/35 * 49/18 = 7/15
27/28 : 9/56 = 27/28 * 56/9 = 6
28/45 : 63/40 = 28/45 * 40/63 = 32/81
6 : 2/7 = 6 * 7/2 = 21
7/25 : 28 = 7/25 * 1/28 = 1/100
2 2/3 : 2 2/7 = 8/3 * 7/16 = 7/6 = 1 1/6
4 4/9 : 5/27 = 40/9 * 27/5 = 24
(6/7)x = 24
x = 24 * 7/6
x = 28
x : 3/11 = 22/27
x = 22/27 * 3/11
x = 2/9
3 3/5 : x = 9/35
x = 3 3/5 : 9/35
x = 18/5 * 35/9
x = 14
(2 2/3)x - 1 5/7 = 3 1/21
(2 2/3)x = 3 1/21 + 1 5/7
(2 2/3)x = 3 1/21 + 1 15/21
(2 2/3)x = 4 16/21
x = 4 16/21 : 2 2/3
x = 100/21 * 3/8
x = 25/14
x = 1 11/14
