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daca 10 supra x = 2 supra 5 atunci x esete egal cu 25, 20, 15, 12​

Răspuns :

10/x = 2/5

2x = 10*5

2x = 50

x = 50/2

x = 25

[tex]\it \dfrac{10}{x}=\dfrac{2}{5} \Rightarrow x=\dfrac{10\cdot5}{2}=25[/tex]