[tex] \frac{x}{4} = - 12 \: \: multiply \: \: both \: \: sides \: \\ \\ 4 \times \frac{x}{4} = 4 \times ( - 12) \: \: reduce \: \: and \: \: multiply \: \\ \\ = x = - 48 \\ \\ hope \: \: it \: \: helps[/tex]
