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

Toán Lớp 8: $\text{Tìm x biết:}$ $\text{5x-3(4x-2(4x-3(5x-2)))=182}$

Toán Lớp 8: $\text{Tìm x biết:}$
$\text{5x-3(4x-2(4x-3(5x-2)))=182}$

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    5x -3{ 4x – 2 [ 4x – 3 (5x – 2)]} = 182
    <=> 5x -3 { 4x -2 [ 4x – 15x +6 ]} =182
    <=> 5x -3 { 4x -2 [ -11x +6 ]} =182
    <=> 5x -3 { 4x + 22x -12 } = 182
    <=> 5x -3 { 26x -12 } =182
    <=> 5x – 78x + 36 = 182
    <=> -73x = 146
    <=> x= -2
    Vậy x=-2
    · Bạn tham khảo ~

  2. Giải đáp:
    5x-3{4x-2[4x-3(5x-2)}]=182
    ⇔5x-3{4x-2[4x – 15x +6 ]}=182
    ⇔5x-3{4x-2[-11x+6]}=182
    ⇔5x-3{4x+22x-12}=182
    ⇔5x-3{26×12}=182
    ⇔-73x=146
    ⇔x=-2
    xin ctlhn ạ

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

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