I hope u all know these are a series of bot accounts
Kx+9=7
Kx=-2 (subtract 9 from both sides)
X=-2/k (divide k from both sides.
S.S{-1 ,-2,-3,-4,-5,-6,-7,-8,-9}
Its only asking numbers less than zero but greater than-10 so 0 and -10 will not be included. Only numbers in bn