For any number $x$, we are told that $x\&=7-x$ and $\&x = x -7$. What is the value of $\&(15\&)$?
\(x\&=7-x\)
\(\&x = x -7\)
What is the value of \(\&(15\&)\) ????
15& = 7 - 15 = - 8
And
&(15&) = &(-8) = &x = -8 - 7 =
-15