Question

611.решите уравнение:1)2/9х=5/12;2)4/15у=2/5;3)3/5х=6;4),7/8у=14;5)3/7х=1⅘;6)9/10у=4½​

Answer 1

Пошаговое объяснение:

2/9х = 5/12

х = 5/12 : 2/9

х= 5/12 * 9/2

х = 45/24

х = 15/8

х = 1 7/8

4/15у = 2/5

у = 2/5 : 4/15

у = 2/5 * 15/4

у = 1/1 * 3/2

у = 3/2

у = 1 1/2

3/5х = 6

х = 6 : 3/5

х = 6 * 5/3

х = 30/3

х = 10

7/8у = 14

у = 14 : 7/8

у = 14 * 8/7

у = 2 * 8/1

у = 16/1

у = 16

3/7х = 1 4/5

3/7х = 9/5

х = 9/5 : 3/7

х = 9/5 * 7/3

х = 3/5 * 7/1

х = 21/5

х = 4 1/5

9/10у = 4 1/2

9/10у = 9/2

у = 9/2 : 9/10

у = 9/2 * 10/9

у = 1/1 * 5/1

у = 5/1

у = 5