Answer:
bfhfjfjfhdhdjxjdudjjdjdisisis9owoayshssznze9x
Where did you get the singers from? And what does 80% of y have to do with singers?
Step-by-step explanation:
I think the answer is B why don't you use a calculator?
With y-x=0, add x to both sides to get y=x.
Now you can substitute either x or y
7x-9x=8 or 7y-9y=8 which is the same thing
-2x=8 or -2y=8
x=-4 or y=-4
Hope this helped!