Question

sabendo que a//b//c, calcule o valor de x:

Answer 1

Teorema de Tales ... ( tem como base a multiplicação cruzada) 

$\frac{8}{6} \ X\ \frac{24}{x+4} \\\\(multiplico\ cruzado)\\\\\\8.(x+4)=6.24\\\\8x+32=144\\\\8x=144-32\\\\8x=112\\\\x= \frac{112}{8} \\\\\boxed{\boxed{x=14}}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ok$