Question

Calcule o valor de x : ​

por favor me ajudem!!!

Answer 1

Alternativa " A "

• Teorema de Tales

$\frac{x}{4} = \frac{6}{8}$

$\frac{x}{1} = \frac{6}{2}$

$\boxed{x = 3}$

Alternativa " B "

$\frac{x}{3} = \frac{x + 6}{6}$

$6x = 3x + 18$

$3x = 18$

$x = \frac{18}{3}$

$\boxed{x = 6}$

Espero ter ajudado!

Answer 2

Explicação passo-a-passo:

$\dfrac{x}{4} = \dfrac{6}{8}$

Multiplique cruzado

$8x = 4 \times 6$

$8x = 24$

$x = \dfrac{24}{8}$

$x = > 3$

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$\dfrac{x}{x + 6} = \dfrac{3}{6}$

Multiplique cruzado

$3(x + 6) = 6x$

$3x + 18 = 6x$

$3x - 6x = - 18$

$- 3x = - 18$

$- 3x = - 18( - 1)$

$3x = 18$

$x = \dfrac{18}{3}$

$x = > 6$