Question

Resultado y comprobacion de la ecuacion lineal

2X – [ 3 + 4X – (5 + 5X ) + 2X ] = - 13

Answer 1

Respuesta:

Primero empezamos resolviendo dentro del parentesis, luego dentro de los corchetes

2X – [ 3 + 4X – (5 + 5X ) + 2X ] = - 13

2X - [3 + 4X - 5 - 5X + 2X] = - 13

2X - [X - 2] = - 13

2X - X + 2 = - 13

X + 2 = - 13

X = - 13 - 2

X = -15

Comprobacion

2X – [ 3 + 4X – (5 + 5X ) + 2X ] = - 13

2X - [3 + 4X - 5 - 5X + 2X] = - 13

Reemplazando el valor de X

2(-15) - [3 + 4(-15) - 5 - 5(-15) + 2(-15)] = - 13

-30 - [3 + -60 - 5 -(-75) + -30] = - 13

-30 - [3 - 60 - 5 + 75 - 30] = - 13

-30 - [ -17 ] = -13

-30 + 17 = -13

-13 = -13 (CUMPLE)