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

Toán Lớp 7: 2x – ( 21 x 3 x 2013 – 2013 x 63) = -3 . 26

Toán Lớp 7: 2x – ( 21 x 3 x 2013 – 2013 x 63) = -3 . 26

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
      2x -(21 .3.2013 -2013 .63) = -3 . 26
    -> 2x – (63 . 2013 – 2013 . 63) = -78
    -> 2x – [ 2013 .(63-63)] = -78
    -> 2x  – (2013.0) = -78
    – >2x – 0 = -78
    – >2x = -78
    -> x= -78 : 2 = -39
    Vậy x=-39

  2. ~ Bạn tham khảo ~
    2x – ( 21 xx 3 xx 2013 – 2013 xx 63) = -3 xx 26
    =>2x – ( 63 xx 2013 – 2013 xx 63) = -78
    =>2x – 0 = -78
    => 2x=-78
    =>x=-39
    Vậy x=-39

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

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