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Impartiti nr. 86 in parti direct proporionale cu 1,25 si 2,(3) va rog eu

Răspuns :

[tex] \frac{x}{1,25} = \frac{y}{2,(3)} \\ \frac{4x}{5}= \frac{3y}{7} [/tex]
[tex] \frac{x}{15}= \frac{y}{28} =k \\ x=15k,y=28k \\ 43k=86 [/tex]
k=2, x=30,y=56