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10supra 12 = x supra 6 =?

Răspuns :

Se face: produsul mezilor ori produsul extremilor . 
10/2 = x/6 => 12x=60 =>x=60 :12 = 5 
[tex] \frac{10}{12} = \frac{x}{6};[/tex]
[tex]x=0,8(3)*6=5;[/tex]
[tex] \frac{10}{12}= \frac{5}{6} .[/tex]