Question

Efectuați 5/2:5/7= 4/9:5/6 3/2:9/8=​

Answer 1

$\frac{5}{2} \div \frac{5}{7} = \frac{4}{9} \div \frac{5}{6} \\ \frac{5}{2} \times \frac{7}{5} = \frac{4}{9} \times \frac{6}{5} \\ \frac{7}{2 } = \frac{8}{15} \\ 105 = 16$

este falsa

$\frac{3}{2} \div \frac{9}{8} \\ \frac{3}{2} \times \frac{8}{9} \\ \frac{4}{3}$

regulile pe care le-am folosit sunt:

1.produsi mezi =produsi extremi

2.inversarea fractiilor.

3.simplificarea pe diagonala.