Bonjour K64
[tex]a)\ |-\dfrac{3}{4}|=\dfrac{3}{4}\ car\ \dfrac{3}{4}\ \textgreater \ 0\\\\b)\ |10^{-4}|=10^{-4}\ car\ 10^{-4}\ \textgreater \ 0\\\\c)\ |-10^3|=10^3\ \ car\ 10^3\ \textgreater \ 0\\\\d)\ |\pi-10|=10-\pi\ car\ 10-\pi\ \textgreater \ 0[/tex]