determimati n€ N daca
a) 7 supra 9 = n supra 27
b) 30 supra n = 6 supra 5
c) 101 supra 37 = 505 supra n
URGENT VA ROGGG!!

Salut,

a) 7/9 = n/27

* produsul mezilor cu produsul extremilor *

7×27 = 9×n
9n = 189
n = 189/9
n = 21.


b) 30/n = 6/5
30×5 = 6×n
6n = 150
n = 150/6
n = 25.

c) 101/37 = 505/n
101×n = 505×37
101n = 18685
n = 18685/101
n = 185.


Succes! :3

[tex]a) \frac{7}{9} = \frac{n}{27} =\ \textgreater \ n= \frac{7*27}{9} =\ \textgreater \ n=21[/tex]
[tex]b) \frac{30}{n} = \frac{6}{5} =\ \textgreater \ n= \frac{30*5}{6} =\ \textgreater \ n=25[/tex]
[tex]c) \frac{101}{37} = \frac{505}{n} =\ \textgreater \ n= \frac{37*505}{101} =\ \textgreater \ n=185[/tex]