Question

na figura a//b//c calcule o valor de x

Answer 1

$ Ola Gabriel

teorema de Tales

24/6 = (x + 1)/(x -5)

(x + 1)/(x - 5) = 4

x + 1 = 4x - 20

3x = 21

x = 7

pronto

Answer 2

Teorema de Tales:

 x - 5         6     (:6)
-------  =   -----
 x - 1          24    (:6)

x - 5         1
------   =  -----
x + 1         4

4(x - 5) = x + 1
4x - 20 = x + 1
4x - x = 1 + 20
3x = 21
x = 21/3
x = 7

R.: x = 7