Question

Найди х, если
Пожалуйста помогите

Answer 1

х / 6 = (7 + 1) / 12

х / 6 = 8 / 12

12х = 8 * 6 = 48

х = 48 / 12

х = 4

3 / х = (11 - 2) / 15

3 / х = 9 / 15

9х = 3 * 15 = 45

х = 45 / 9

х = 5

Answer 2

1) х/6=7/12+1/12

х/6=8/12

х=6*8/12=48/12=4

2) 3/х=11/15-2/15  

3/х=9/15

x=3*9/15=45/9=5