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Determinați x : x/9*80=100

Răspuns :

[tex] \frac{x}{9} \times8 0 = 100[/tex]

[tex] \frac{x}{9} = \frac{100}{80} [/tex]

[tex]x = \frac{100 \times 9}{80} [/tex]

[tex]x = 11.25[/tex]

[tex]x = \frac{225}{20} [/tex]