Răspuns:
Explicație pas cu pas:
[tex]\frac{7}{15} =\frac{7x2}{15x2} =\frac{14}{30}[/tex]
[tex]\frac{7}{15} =\frac{7x3}{15x3} =\frac{21}{45}[/tex]
[tex]\frac{7}{15} =\frac{7x4}{15x4} =\frac{28}{60}[/tex]
[tex]\frac{7}{15} =\frac{7x5}{15x5} =\frac{35}{75}[/tex]
[tex]\frac{7}{15} =\frac{7x6}{15x6} =\frac{42}{90}[/tex]