Răspuns:
[tex]\frac{7}{18}[/tex]
Explicație pas cu pas:
Bună!
[tex](\frac{2}{9} -\frac{1}{6}+\frac{1}{6} *\frac{1}{3} ):\frac{2}{7}[/tex] = [tex](^{2)} \frac{2}{9} -^{3)} \frac{1}{6} +\frac{1}{18} )*\frac{7}{2}[/tex] = [tex]\frac{4-3+1}{18} *\frac{7}{2}[/tex] = [tex]\frac{2}{18} *\frac{7}{2}[/tex] = [tex]\frac{7}{18}[/tex]
