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

Toán Lớp 6: a (x-15)-75 =0 b 575-(6x+70)=445

Toán Lớp 6: a (x-15)-75 =0
b 575-(6x+70)=445

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    a) (x – 15) – 75 = 0
    => x – 15 = 75
    => x = 75 + 15 = 90
    Vậy x = 100
    b) 575 – (6x + 70) = 445
    => 6x + 70 = 575 – 445
    => 6x + 70 = 130
    => 6x = 130 – 70
    => 6x = 60
    => x = 60 : 6
    => x = 10
    Vậy x = 10
    #SunHee

  2. (x – 15) – 75 = 0
    x – 15 = 0 + 75
    x – 15 = 75
    x = 75 + 15
    x = 90.
    Vậy x = 90
    575 – (6x + 70) = 445
    6x + 70 = 575 – 445
    6x + 70 = 130
    6x = 130 – 70
    6x = 60
    x = 60 : 6
    x = 10.
    Vậy x = 10

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

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