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4 February, 14:40

Afla numarul A daca ab-ac=45 și b-c=9

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Answers (2)
  1. 4 February, 14:52
    0
    Scrii asa:

    ab-ac=45, dupa aia faci factorii comuni (a) minus restul:

    a - (b-c) = 45 (45 pentru ca si aia a ramas)

    b-c era 9 deci scrii:

    a x 9 = 45 (ori pentru ca asa se face)

    deci a = 45 x 9

    a = 5
  2. 4 February, 14:59
    0
    Ab-ac=45

    a * (b-c) = 45

    a*9=45

    a=5
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