How do i do this (comes with picture) if someone could me with this that would be amazing : )

The error occurs in step 3. The student did not distribute the negative properly to every term inside the parenthesis. Below is one proper way to solve for y





<--- Note the negative and the parenthesis

<--- Note how we have -1/2 and not +1/2







So the proper final answer is
(this is a mixed number which converts to the decimal number -5.5)