Question

(4 X - 8 ) / (8X +4) = 12/20

Answer 1

Resposta:

$x=-13$

Explicação:

$\frac{\left(4x-8\right)}{\left(8x+4\right)}=\frac{12}{20}$

$\frac{x-2}{2x+1}=\frac{12}{20}$

$\left(x-2\right)\cdot \:20=\left(2x+1\right)\cdot \:12$

$20x-40=24x+12$

$20x-40+40=24x+12+40$

$20x=24x+52$

$20x-24x=24x+52-24x$

$-4x=52$

$\frac{-4x}{-4}=\frac{52}{-4}$

$x=-13$

Espero ter ajudado!