Question

5 efectueaza: 4/5 - 2/5=?, 4/8 - 2/5=? 10/10 - 6/10=?​

Answer 1

Răspuns:

1.$\frac{4}{5}-\frac{2}{5}=\frac{2}{5}$

2. La a doua amplificam la acelasi numitor

$\frac{4}{8}-\frac{2}{5}=\frac{1}{2}-\frac{2}{5}=\frac{5}{10}-\frac{4}{10}=\frac{1}{10}$

3.

$\frac{10}{10}-\frac{6}{10}=\frac{4}{10}=\frac{2}{5}$

Explicație pas cu pas: