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

Toán Lớp 7: help ( – 12 ) – x – ( – 19 ) = 0

Toán Lớp 7: help
( – 12 ) – x – ( – 19 ) = 0

Comments ( 2 )

  1. (-12)-x-(-19)=0
    =>-12-x+19=0
    =>7-x=0
    =>-x=-7
    =>x=7
    Vậy x=7
     

  2. Answer
    (-12) – x – (-19) = 0
    => -12 – x + 19 = 0
    => -12 – x = 0 – 19
    => -12 – x = -19
    => x = -12 + 19
    => x = 7
    $\text{Vậy}$ x = 7

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

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