YOMEDIA
NONE

Tìm a, b biết a-b=4 và (a-3)/(b-2)=3/2

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Theo dõi Vi phạm
ADSENSE

Trả lời (1)

  • Lê hufynh quốc Bảo

    Ta có: a-b=4 => a = b+4

    \(\dfrac{a-3}{b-2}=\dfrac{3}{2}=>2\left(a-3\right)=3\left(b-2\right)\)

    \(=>2a-6=3b-2\)

    \(=>2a=3b=>2\left(b+4\right)=3b\)

    \(=>2b+8=3b=>3b-2b=8=>b=8\)

    \(=>a=b+4=8+4=12\)

    \(=>\left(a,b\right)=\left(12,8\right)\)

    Chúc bn học tốt

      bởi Lê hufynh quốc Bảo 15/12/2018
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