Answer:
[tex]\boxed{\bold{-\left(-18\right)}}[/tex]
Step By Step Explanation:
-(-18)
Word Form: Negative, Negative Eighteen
The Opposite Of -18 = Positive Eighteen
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Solve: -(-18)
Apply Rule [tex]\bold{-\left(-a\right)=a}[/tex]
= 18
Regards,
Mordancy