Hello there!
Answer: ⇒⇒⇒⇒⇒-5.38
Step-by-step explanation:
First, remove parenthesis.
[tex]3.12-8.5[/tex]
Then, subtract by the number.
[tex]3.12-8.5=-5.38[/tex]
[tex]=-5.38[/tex]
Hope this helps!
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-Charlie
