Solve y over negative 4 + 5 = 15
a. 80
b. −80
c. 40
d. −40

!

Hi there! ~

To start off our equation we have (as listed in the question) 


First we need to simplify, and to do so we are going to replace y with -1 as shown here;



Now we subtract 5 from both sides.



Now our next, and final step is to multiply both of our given sides by; 



Leaving us with our final answer of y = -40.
Therefore, D.

~ Littlebird17