The number is
.
Find additive inverse:
\The additive inverse property:
.
\

\
(Subtract
from each side)
\
(Subtract:
)
.
\
The additive inverse of a number is
.
Find multiplicative inverse:
\\
The product of a number and multiplicative inverse is one.
\The multiplicative inverse property:
.
.
(Multip each side by
)
(Cancel common terms)
The product of a number and multiplicative inverse is
.
The additive inverse of a number is
.
The product of a number and multiplicative inverse is
.