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2 November, 16:09

Intr-o clasa snt 35 de elevi. nr fete este egal cu 75 la suta din nr baietilor. aflati nr baietilor

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  1. 2 November, 16:22
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    Salut!

    b=baiat

    f=fata

    In clasa sunt 35 elevi.

    75/100 x b=f

    3b/4=f

    3b=4f

    b+f=35

    3b+3f=105

    7f=105

    f=15

    b=35-15

    b=20

    Succes!
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