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

Toán Lớp 6: 3) Tìm x : a) x- 3 =(-9)mũ1 %3D b) -6(24-x)=(-6)mũ3 4 c) x: -4 +4 = (-2)mũ4 d) -108 :x + 40 = -10-3

Toán Lớp 6: 3) Tìm x :
a) x- 3 =(-9)mũ1
%3D
b) -6(24-x)=(-6)mũ3
4
c) x: -4 +4 = (-2)mũ4
d) -108 😡 + 40 = -10-3

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
     a, x-3=(-9)^1
    =>x-3=-9
    =>x=-9+3
    =>x=-6
    b, -6(24-x)=(-6)^3
    =>24-x=(-6)^3:(-6)
    =>24-x=(-6)^2
    =>24-x=36
    =>x=24-36
    =>x=-12
    c, x:(-4)+4=(-2)^4
    =>x:(-4)=16-4
    =>x:(-4)=12
    =>x=12.(-4)
    =>x=-48
    d, -108:x+40=(-10).(-3)
    =>-108:x+40=30
    =>-108:x=30-40
    =>-108:x=-10
    =>x=(-108):(-10)
    =>x=108/10=10,8

  2. ${a) x – 3 = ( -9 )^{1} }$
    ${⇒ x – 3 = -9}$
    ${⇒ x = -6}$
    Vậy ${x = -6}$
    ${b) -6( 24 – x ) = ( -6 )^{3} }$
    ${⇒ -6( 24 – x ) = -216}$
    ${⇒ 24 – x = 36}$
    ${⇒ x = -12}$
    Vậy ${x = -12}$
    ${c) x : ( -4 ) + 4 = ( -2 )^{4} }$
    ${⇒ x : ( -4 ) + 4 = 16}$
    ${⇒ x : ( -4 ) = 12}$
    ${⇒ x = -48}$
    Vậy ${x = -48}$
    ${d) -108 : x + 40 = -10 – 3}$
    ${⇒ -108 : x + 40 = -13}$
    ${⇒ -108 : x = -53}$
    ${⇒ x = }$$\dfrac{108}{53}$
    Vậy ${x = \dfrac{108}{53} }$

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