Answer:
[tex]x = -3[/tex]
Step-by-step explanation:
Step 1: Subtract x from both sides
[tex]12 + 7x - x = x - 6 - x[/tex]
[tex]12 + 6x = -6[/tex]
Step 2: Subtract 12 from both sides
[tex]12 + 6x - 12 = -6 - 12[/tex]
[tex]6x = -18[/tex]
Step 3: Divide both sides by 6
[tex]6x / 6 = -18 / 6[/tex]
[tex]x = -3[/tex]
Answer: [tex]x = -3[/tex]
