Question

(9-2x; 15) = (x; 5x) ​

Answer 1

DESARROLLO:

$5x = 15 \\ x = \frac{15}{5} \\ x = 3$

$x = 9 - 2x \\ x + 2x = 9 \\ 3x = 9 \\ x = \frac{9}{3} \\ x = 3$

RESPUESTA:

X = 3