Find the attachments for complete solution
X= -8/5y+16
y= -5/8x+10
you didnt say if the equation was "5x+8y=80" not sure if your adding or subtracting or adding but if your adding then this is correct :)
Percent decrease= change/original amount
Change=600-576=24
24/600=0.04= 4%
Final answer: 4%
x = 0.2445238 is the only answer I found.