This can be represented as:
[tex]2(x + 6) = 8[/tex]
Open the bracket:
[tex]2x + 12 = 8[/tex]
Collect like terms:
[tex]2x = 8 - 12[/tex]
Simplify :
[tex]2x = - 4[/tex]
Divide both sides by 2:
[tex]x = - 2[/tex]
You can check the answer by inputting - 2 in the first equation:
[tex]2( - 2 + 6) = 8[/tex]
[tex]2(4) = 8[/tex]
[tex]8 = 8[/tex]
Hope I helped you! ☺️