Answer:
y=0
Step-by-step explanation:
8^3 8^-5 8^y= 8^-2
We know that a^b * a^c = a^(b+c)
8^(3-5+y) = 8^-2
The bases are the same so the exponents must be the same
-2+y = -2
y = 0
3/10
get a common denominator and then subtract
-32 I think (plz dont be mad at me if this is wrong)