Question

Aflati: -a daca a∈{-3,1; -2,03;0 }

Answer 1

[tex]a\in \{-3.1,-2.03,0 \}\\ a=-3.1 \Rightarrow -a=3.1\\ a=-2.03 \Rightarrow -a=2.03\\ a=0 \Rightarrow -a=0\\[/tex]