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

Toán Lớp 7: d) (2x – 3) – (x – 5) = (x + 2) – (x – 1)

Toán Lớp 7: d) (2x – 3) – (x – 5) = (x + 2) – (x – 1)

Comments ( 2 )

  1. d) (2x – 3) – (x – 5) = (x + 2) – (x – 1)
    <=> 2x – 3 – x + 5 = x + 2 – x + 1
    <=> x + 2              = 3
    <=> x                    = 1
    Vậy x = 1
    _????????????????????????????????????????????????_

  2. Giải đáp: x=1
     
    Lời giải và giải thích chi tiết:
     (2x-3)-(x-5)=(x+2)-(x-1)
    2x-3-x+5=x+2-x+1
    x+2=3
    x=1

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