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va rog repede dau coroana​

Va Rog Repede Dau Coroana class=

Răspuns :

Răspuns:

a/b=9/5=>b=5a/9

b/c=18/25

(5a/9)/c=18/25

18c=25×5a/9

18c=1255a/9

9×18c=125a

162c=125a=>a/c=162/125

Explicație pas cu pas:

[tex]\frac{a}{b} = \frac{9}{5}\\ [/tex]

[tex]\frac{b}{c} = \frac{18}{25} \\ [/tex]

[tex]\implies \frac{a}{c} = \frac{a}{b} \cdot \frac{b}{c} = \frac{9}{5} \cdot \frac{18}{25} = \bf \frac{162}{125} \\ [/tex]