Question

No triângulo seguinte, DE // AB. Calcule c e B

Answer 1

Resposta:

x = 24

Explicação passo-a-passo:

$\frac{12}{8+x} =\frac{9}{x} \\\\12x=9(8+x)\\\\12x=72+9x\\12x-9x=72\\\\3x=72\\\\x=\frac{72}{3} \\\\x=24$