First you had to used apply absolute rule.
[tex]|-1|=1[/tex]
[tex]1+|0.8|[/tex]
[tex]|0.8|=0.8[/tex]
[tex]1+0.8[/tex]
Then simplify.
[tex]=1.8[/tex]
Final answer: [tex]\boxed{=1.8}[/tex]
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
