Question

Nas figuras,a//b//c//,calcule o valor de x

Answer 1

Pelo Teorema de Tales:

$\frac{AB}{BC}=\frac{DE}{EF}$

$\frac{x-5}{x+1} = \frac{6}{24}$

Multiplicamos cruzado:

$24x - 120 = 6x + 6$

$18x=6+120$

$x=\frac{126}{18}$

$x=7$