Respuesta :

Answer:

[tex] \huge \boxed{ \boxed{x = 8}}[/tex]

Step-by-step explanation:

to understand this

you need to know about:

  • rectangle
  • equation
  • PEMDAS

tips and formulas:

  • every angle of a rectangle is 90°

let's solve:

[tex]step - 1 : define \\ 12x - 6 = 90[/tex]

[tex]step - 2 : solve[/tex]

  1. [tex] \tt add \: 6 \: to \: both \: sides : \\ \tt12x - 6 + 6 = 90 + 6 \\ \tt 12x = 96[/tex]
  2. [tex] \tt divide \: both \: sides \: by \: 12 : \\ \tt \frac{12x}{12} = \frac{96}{12} \\ \tt \therefore x = 8[/tex]