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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 260:(x+4)=5.(2 mũ 3 + 5)-3.(3 mũ 3+2 mũ 2) giúp mk với ak

Toán Lớp 6: 260:(x+4)=5.(2 mũ 3 + 5)-3.(3 mũ 3+2 mũ 2)
giúp mk với ak

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     260:(x+4)=5.(2^3 +5)-3.(3^3 +2^2)
    =>260:(x+4)=5.(8+5)-3.(27+4)
    =>260:(x+4)=5.13 -3.31
    =>260:(x+4)=65 -93
    =>260:(x+4)=-28
    =>x+4=260:-28=-65/7
    =>x=-65/7-4=-93/7
    Vậy $x=-93/7$

  2. 260 : (x + 4) = 5 . (2^{3} + 5) – 3 . (3^{3} + 2^{2})
    $\Rightarrow$ 260 : (x + 4) = 5 . (8 + 5) – 3 . (27 + 4)
    $\Rightarrow$ 260 : (x + 4) = 5 . 13 – 3 . 31
    $\Rightarrow$260 : (x + 4) = 65 – 93
    $\Rightarrow$ 260 : (x + 4) = -28
    $\Rightarrow$ (x + 4) = 260 : (-28)
    $\Rightarrow$ x + 4 = -65/7
    $\Rightarrow$ x = -65/7 – 4
    $\Rightarrow$ x = -93/7
    $\text{Vậy}$ x = -93/7

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222-9+11+12:2*14+14 = ? ( )

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