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

Toán Lớp 6: A)3x+27=45 B)35-5(x-1)=10 C)4.2mũ x -3=125

Toán Lớp 6: A)3x+27=45
B)35-5(x-1)=10
C)4.2mũ x -3=125

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    a)
    3x + 27 = 45
    -> 3x = 18
    -> x = 6
    b)
    25 – 5(x – 1) = 10
    -> 5(x – 1) = 15
    -> x – 1 = 3
    -> x = 4
    c)
    4 . 2^x – 3 = 125
    -> 4 . 2^x = 128
    -> 2^x = 32
    -> x = 5

  2. text{@dg}
    text{a) 3x+27=45}
    3x= 18
    x=6
    text{b) 35-5(x-1)=10}
    5(x-1)=25
    x-1=5
    x=6
    text{c) 4.}2^x-3=125
    4.2^x=128
    2^x=32
    x=5

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