Răspuns:
Explicație pas cu pas:
[tex]\bf -1\dfrac{1}{4} =-\dfrac{1\cdot 4+1}{4}=-\dfrac{5}{4}~\red{\xrightarrow[]{~Inversul~}-\dfrac{4}{5} }[/tex]
[tex]\bf 1\dfrac{1}{2} =\dfrac{1\cdot 2+1}{2}=\dfrac{3}{2}~\purple{\xrightarrow[]{~Opusul~}-\dfrac{3}{2} }[/tex]
