Question

Descubra o valor de x na equação x + 11 = 6(x - 19)

Answer 1

$\sf x+11=6\left(x-19\right)\\\\\\\sf \boldsymbol{\sf expandir\Rightarrow x+11=6\left(x-19\right) }\\\\\\\sf x+11=6x-114\\\\\\\sf \boldsymbol{\sf Subtrair\:11\ de\:ambos\:os\:lados}\\\\\\\sf x+11-11=6x-114-11\\\\\\\sf \boldsymbol{\sf Simplificar}\\\\\\\sf x=6x-125\\\\\\\boldsymbol{\sf Subtrair\:6x\:de\:ambos\:os\:lados}\\\\\\\sf x-6x=6x-125-6x\\\\\\\sf \boldsymbol{\sf Simplificar}\\\\\\\sf -5x=-125\\\\\\\sf \boldsymbol{\sf Dividir\:ambos\:os\:lados\:por\:-5}$

$\sf \dfrac{-5x}{-5}=\dfrac{-125}{-5}\\\\\\\boldsymbol{\sf Simplificar}\\\\\\\boxed{\sf x=25}$