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

Toán Lớp 6: a)-x+8=-17 b)-19-x=-20 c)5•x-28=2 d)4•x-2=6¹¹÷6¹⁰

Toán Lớp 6: a)-x+8=-17
b)-19-x=-20
c)5•x-28=2
d)4•x-2=6¹¹÷6¹⁰

Comments ( 1 )

  1. Giải đáp:
    a)-x+8=-17
    => -x = -17-8
    => -x = -25
    Vậy x= 25
    b)-19-x=-20
    => x = -19-(-20)
    => x = 1
    Vậy x =1
    c)5•x-28=2
    => 5x = 2+28
    => 5x = 30
    => x = 30 : 5
    => x = 6
    Vậy x = 6
    d)4•x-2=6¹¹÷6¹⁰
    =>4x-2 = 6
    =>4x = 6+2
    =>4x = 8
    => x = 8:4
    => x = 2
    Vậy x = 2
    Lời giải và giải thích chi tiết:
     

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

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