[tex]( \: a \: \: \: \: b \: ) \: dp. \: (2 \: \: \: \: 4) \: = > \frac{a}{2} = \frac{b}{4} = k[/tex]
[tex] \frac{a}{2} = k \: = > a = 2k[/tex]
[tex] \frac{b}{4} = k \: = > b = 4k[/tex]
[tex]a + b = 20[/tex]
[tex]2k + 4k = 20[/tex]
[tex]6k = 20[/tex]
[tex]k = 3.(3)[/tex]
=> a = 3(3)*2 = 6,(6)
b = 3,(3)*4=13,(3)
Nu sunt sigura de raspuns!!!!
