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

Toán Lớp 7: A) 3x +5/6 =x-4 B) 5x + 1/3 > -2x + -2/3 C)4x +4/5<3/2 -x

Toán Lớp 7: A) 3x +5/6 =x-4
B) 5x + 1/3 > -2x + -2/3
C)4x +4/5<3/2 -x

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    a,
    $3x+\dfrac{5}{6}=x-4$
    $⇒2x=\dfrac{-29}{6}$
    $⇒x=\dfrac{-29}{12}$
    Vậy $x=\dfrac{-29}{12}$
    b,
    $5x+\dfrac{1}{3}>-2x+\dfrac{-2}{3}$
    $⇔7x>-1$
    $⇔x>\dfrac{-1}{7}$
    c,
    $4x+\dfrac{4}{5}<\dfrac{3}{2}-x$
    $⇔5x<\dfrac{7}{10}$
    $⇔x<\dfrac{7}{50}$
     

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

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