Răspuns:
1.[tex]\frac{4}{5}-\frac{2}{5}=\frac{2}{5}\\\\\\[/tex]
2. La a doua amplificam la acelasi numitor
[tex]\frac{4}{8}-\frac{2}{5}=\frac{1}{2}-\frac{2}{5}=\frac{5}{10}-\frac{4}{10}=\frac{1}{10}[/tex]
3.
[tex]\frac{10}{10}-\frac{6}{10}=\frac{4}{10}=\frac{2}{5}[/tex]
Explicație pas cu pas:
