Hey there!
[tex]|\displaystyle\frac{x-1}{2} |=7[/tex]
Let's say that x-1 is negative:
[tex]\displaystyle\frac{-x+1}{2} =7[/tex]
The first step is to multiply both sides by 2:
[tex]\text{-x+1=14}[/tex]
Now, move 1 to the right, using the opposite operation:
[tex]\text{-x=14-1}[/tex]
[tex]\text{-x=13}[/tex]
Divide both sides by -1:
[tex]\text{x=-13}[/tex]
- Note: Since the negative sign is already entered, all you need to enter is 13.
I hope you find my answer helpful.
Good luck!
Have a great day!
[tex]\bf{StargazingWithJoy}[/tex]