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

Toán Lớp 6: tìm x a,140-100:x=120 b, 25. (2x-4).12=0

Toán Lớp 6: tìm x
a,140-100:x=120
b, 25. (2x-4).12=0

Comments ( 2 )

  1. text{a) 140 – 100 : x = 120}
    text{100 : x = 140 – 120}
    text{100 : x = 20}
    text{x = 100 : 20}
    text{x = 5}
    text{b) 25. ( 2x – 4 ) .12 = 0}
    text{25 . ( 2x − 4 ) = 0 : 12}
    text{25. ( 2x − 4 ) = 0}
    text{2x − 4 = 0 : 25}
    text{2x – 4 = 0}
    text{2x = 0 + 4}
    text{2x = 4}
    text{x = 4 : 2}
    text{x = 2}

  2. ~ Bạn tham khảo ~
    a, 140 – 100:x = 120
    100:x = 140 – 120
    100:x = 20
    x=100:20
    x=5
    Vậy x = 5
    b, 25.(2x-4) . 12 = 0
    25 . ( 2x-4) = 0:12
    25.(2x-4) = 0
    2x-4 = 0:25
    2x-4 = 0
    2x = 0+4
    2x=4
    x = 4:2
    x=2
    Vậy x = 2
    $#Vịt vàng$
     

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

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