y=(1/2)x-1
You have to set both to y and then add. After that you solve for y
The given expression is

Let's replace x = 7 and y = -2.

<h2>Therefore, the value of the expression is 20.</h2>
I hope this helps, if any doubt leave a comment
Answer:
1/6
Step-by-step explanation:
convert ti decimal then compare the two