Question

halle el termino medio diferencial entre:

2/5 y 1/3

205 y 23

16 y 10

Escribe el número que forma la proporción geométrica dada en cada caso.

1) 4÷2=10÷x   

2) x∶5 ∷7∶3


3)(-4)/x=6/15
                                                     
4) 12/4= x/2

Answer 1

2/5 - n = n - 1/3
2/5 + 1/3 = 2n
(6 + 5)/15 = 2n
11/15 = 2n
11/15/2/1 = n
11/30 = n

205 - n = n - 23
228 = 2n
114 = n

16 - n = n - 10
26 = 2n
13 = n
--------------------------------
4/2=10/x 
4x = 20
x = 5

x/5 = 7/3
3x = 35
x = 35/3

(- 4)/x = 6/15 
- 60 = 6x
- 10 = x

12/4 = x/2
24 = 4x
6 = x

Answer 2

2/5 - n = n - 1/3

2/5 + 1/3 = 2n

(6 + 5)/15 = 2n

11/15 = 2n

11/15/2/1 = n

11/30 = n

205 - n = n - 23

228 = 2n

114 = n

16 - n = n - 10

26 = 2n

13 = n

--------------------------------

4/2=10/x  

4x = 20

x = 5

x/5 = 7/3

3x = 35

x = 35/3

(- 4)/x = 6/15  

- 60 = 6x

- 10 = x

12/4 = x/2

24 = 4x

6 = x espero te sirva