Question

-3x + 2 = 9x - 3
me urge​

Answer 1

Respuesta:

-3x + 2 = 9x - 3

2+3= 12x

5= 12x

5/12=x

Answer 2

-3x + 2 = 9x - 3 me urge.

¡Hola!

$\bold{ECUACIONES \ LINEALES.}$

$- 3x + 2 = 9x - 3 \\ \\ \\ - 3x - \red{ 9x} + 2 = 9x - \red{9x} - 3 \\ \\ \\ - 12x + 2 = - 3 \\ \\ \\ - 12x + 2 - \red{2} = - 3 - \red{2} \\ \\ \\ - 12x = - 5 \\ \\ \\ \gray{ - 1}( - 12x) = \gray{ - 1}( - 5) \\ \\ \\ 12x = 5 \\ \\ \\ \dfrac{12x}{ \green{12}} = \dfrac{5}{ \green{12}} \\ \\ \\ \mapsto \boxed{ \boxed{ \pink{x = \dfrac{5}{12}}}}$

$\bold{COMPROBAR.}$

$- 3x + 2 = 9x - 3 \\ \\ \\ -3 ( \purple{ \dfrac{5}{12} }) + 2 = 9( \purple{ \dfrac{5}{12} }) - 3 \\ \\ \\ - \dfrac{15}{12} + 2 = \dfrac{45}{12} - 3 \\ \\ \\ \dfrac{ - 15 + 24}{12} = \dfrac{45 - 36}{12} \\ \\ \\ \frac{ 9}{12} = \frac{9}{12} \\ \\ \\ \dfrac{3}{4} = \dfrac{3}{4}$

Espero que sirva y saludos.