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

Toán Lớp 6: 2012-100.(x+30)=(-2)^7:(-2)^3 giúp mik vs

Home/ Toán Lớp 6: 2012-100.(x+30)=(-2)^7:(-2)^3 giúp mik vs

Toán Lớp 6: 2012-100.(x+30)=(-2)^7:(-2)^3 giúp mik vs

Tháng Bảy 2, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: 2012-100.(x+30)=(-2)^7:(-2)^3
giúp mik vs

Comments ( 2 )

  1. thanhthuythu
    thanhthuythu
    2 Tháng Bảy, 2022 at 6:04 chiều
    Reply
    2012 – 100 . (x + 30) = $(-2)^{7}$ : $(-2)^{3}$
    2012 – 100 . (x + 30) = $(-2)^{4}$
    2012 – 100 . (x + 30) = 16
    100 . (x + 30) = 2012 – 16
    100 . (x + 30) = 1996
    x + 30 = 1996 : 100
    x + 30 = $\frac{499}{25}$
    x = $\frac{499}{25}$ – 30
    x = $\frac{-251}{25}$
    Vậy x = $\frac{-251}{25}$

  2. thudan
    thudan
    2 Tháng Bảy, 2022 at 6:04 chiều
    Reply
    2012 – 100. ( x + 30 ) = ( -2 )^7 :  ( -2 )^3
    => 2012 – 100. ( x + 30 ) = ( -2 )^4
    => 2012 – 100. ( x + 30 ) = 16
    => 100. ( x + 30 ) = 2012 – 16
    => 100. ( x + 30 ) = 1996
    => x + 30 = 1996 : 100
    => x + 30 = 19,96
    => x = 19,96 – 30
    => x = -10,04
      $Vậy$ x = -10,04

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

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