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Daca x/4=y/7, atunci 9x-2y/x+3y =........

Răspuns :

Munmnc
[tex] \frac{x}{4} = \frac{y}{7}=k [/tex]
x=4k
y=7k
[tex] \frac{9*4k-2*7k}{3k+3*5k} = \frac{36k-14k}{3k+15k} = \frac{22k}{18k} = \frac{11}{9} [/tex]

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