Question

Sendo a//b//c calcule o valor x

Answer 1

4 x 12x = 84. x = 84. X = 7

_. = _ _

12. 21. 12

Answer 2

Resposta:

Teorema de Tales:

$\dfrac{4}{12} = \dfrac{x}{21} \\ \\ 12x = 84 \\ \\ x = \dfrac{84}{12} \\ \\ \boxed{x = 7}$

Att Silver Sword✔