I think -8 -64 but srry if wrong
Equations -
I like to find the decimal expression of the fractions, to make this easier.

Divide each sides by 0.6

Answer: 6/7
Y=2
If you subtract 9-7 you get the answer 2 which makes y=2.
Take all the zero's away and multiply the numbers that are left.
which is 1*1=1 now add all of the zeros to that one which will turn it into
10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
which is the answer