Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 6: Tìm x thuộc N {[(2x-14):2 mũ -3]:2}-1=0

Toán Lớp 6: Tìm x thuộc N
{[(2x-14):2 mũ -3]:2}-1=0

Comments ( 2 )

  1. {[(2x – 14) : 2^{-3}] : 2} – 1 = 0
    $\Rightarrow$ {[(2x – 14) : 1/8] : 2} = 0 + 1
    $\Rightarrow$ [(2x – 14) : 1/8] : 2 = 1
    $\Rightarrow$ [(2x – 14) : 1/8] = 1 . 2
    $\Rightarrow$ (2x – 14) : 1/8 = 2
    $\Rightarrow$ (2x – 14) =  2 . 1/8
    $\Rightarrow$ 2x – 14 =  1/4
    $\Rightarrow$ 2x  =  1/4 + 14
    $\Rightarrow$ 2x  =  57/4
    $\Rightarrow$ x  =  57/4 : 2
    $\Rightarrow$ x  =  57/8
    $\text{Vậy }$ x  =  57/8

  2. Giải đáp+Lời giải và giải thích chi tiết:
     {[(2x-14):2^(-3)]:2}-1=0
    =>[(2x-14): 1/8]:2=1
    =>(2x-14):1/8 =1×2=2
    =>2x-14= 2. 1/8=1/4
    =>2x=1/4 +14
    =>2x=57/4
    =>x=57/4 .1/2=57/8
    Vậy x=57/8

Leave a reply

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

About Lyla Anh