Hello.
Let's find the multiplicative inverse of -100.
In order to do that, we need to write -100 as a fraction:
[tex]\bf{\displaystyle\frac{-100}{1}[/tex]
Now, in order to find the multiplicative inverse of -100, we should flop the fraction over:
[tex]\bf{\displaystyle\frac{1}{-100}[/tex]
I hope it helps.
Have an outstanding day. :)
[tex]\boxed{imperturbability}[/tex]