Explicație pas cu pas:
a) 7 supra 9
[tex]opus = - \frac{7 }{9} \\ modul = | \frac{7}{9} | = \frac{7}{9} [/tex]
b) -2,(4)
[tex] - 2.(4) = - \frac{24 - 2}{9} = - \frac{22}{9} \\ opus = - ( - \frac{22}{9} ) = \frac{22}{9} \\ modul = | - \frac{22}{9} | = \frac{22}{9} [/tex]
c) 0
[tex]opus = - 0 = 0 \\ modul = |0| = 0[/tex]
