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10 September, 09:55

Suma a doua numere este 3,72. determina cele doua numere, stiind ca unul dintre ele este cu 0,6 mai mare decat 1 supra 3 din celaland

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  1. 10 September, 11:47
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    A+b = 3,72

    a = b/3 + 0,6

    b/3 + 0,6 + b = 3,72

    b/3+b = 3,72 - 0,6

    b/3+b = 3, 12

    b/3 + 3b/3 = 3*3,12/3

    ⇒ 4b/3 = 9,36/3

    4b = 9,36

    b = 9,36/4

    b = 2, 34

    a = 3,72 - 2,34

    a = 1, 38
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