Răspuns:
Explicație pas cu pas:
[tex]-\frac{6}{35} +\frac{32}{175} +\frac{4}{21} -\frac{4}{35} =\\\\=-\frac{6}{35} -\frac{4}{35} +\frac{32}{175} +\frac{4}{21} =\\ \\ =-\frac{10}{35}+\frac{32}{175} +\frac{4}{21}=-\frac{18}{175} +\frac{4}{21}=\\ \\ =\frac{-54+100}{525} =\frac{46}{525}[/tex]
