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

Toán Lớp 9: Câu 1:Tìm x 1+2x=7 x=??????????????

Toán Lớp 9: Câu 1:Tìm x
1+2x=7
x=??????????????

Comments ( 2 )

  1. ~ Bạn tham khảo ~
    1+2x=7
    =>2x=7-1
    =>2x=6
    =>x=6÷2
    =>x=3
    Vậy S={3}

  2. text{ta có}
    1+2x=7
    <=>2x = 7-1
    <=>2x=6
    <=> x = 6 : 2
    <=> x =3
    text{Vậy}  x=3
    ~~~~~~~~~~GOOD LUCK~~~~~~~~~
     

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