Question

Tìm x:

a, x : 2 = \(\dfrac{2}{3}+\dfrac{3}{4}\)                                           b,X x \(\dfrac{1}{5}=1-\dfrac{3}{25}\)

hì mn giải dùm em nha

Answer 1

1

22/5

Answer 2

 a) X : 2 = 2/3 + 3/4 

     X : 2 = 17/12

     X      = 17/12 x 2 

     X       = 17/6 

b) X x 1/5 = 1 - 3/25

    X x 1/5 = 22/25

    X          = 22/25 : 1/5 

    X          = 22/5 

Answer 3

a) x:2= 17/12

x = 17/12 x 2

x= 17/6

b) X x 1/5 = 22/25

x = 22/15:1/5

x = 22/5

Answer 4

Answer 5

\(a,x:2=\dfrac{17}{12}\)

\(x=\dfrac{17}{12}\times2\)

\(x=\dfrac{17}{6}\)

\(b,x\times\dfrac{1}{5}=\dfrac{22}{25}\)

\(x=\dfrac{22}{25}\times\dfrac{5}{1}\)

\(x=\dfrac{22}{5}\)

Answer 6

a) x:2= 17/12 x = 17/12 x 2   x= 17/6

b) X x 1/5 = 22/25   x = 22/15:1/5    x = 22/5

Answer 7

_{A) x:2= 17/12}

_{x = 17/12 x 2}

_{x= 17/6}

_{B) X x 1/5 = 22/25}

_{x = 22/15:1/5}

_{x = 22/5}

Answer 8

\(a,x:2=\dfrac{2}{3}+\dfrac{3}{4}\)

  x   : 2  =\(\dfrac{17}{12}\)

  x         = \(\dfrac{17}{12}x2\)

  x        = \(\dfrac{17}{12}x\dfrac{2}{1}\)

x          =\(\dfrac{17}{12}x\dfrac{24}{12}\)

x          = \(\dfrac{408}{144}=\dfrac{51}{18}\)

Answer 9

a,

\(x:2=\dfrac{2}{3}+\dfrac{3}{4}\)

\(x:2=\dfrac{8}{12}+\dfrac{9}{12}\)

\(x:2=\dfrac{17}{12}\)

\(\Rightarrow x=\dfrac{17}{12}\) x \(2\)

\(\Rightarrow x=\dfrac{17}{6}\)

b, 

\(x\) x \(\dfrac{1}{5}=1-\dfrac{3}{25}\)

\(x\) x \(\dfrac{1}{5}=\dfrac{25}{25}-\dfrac{3}{25}\)

\(x\) x \(\dfrac{1}{5}=\dfrac{22}{25}\)

\(\Rightarrow x=\dfrac{22}{25}:\dfrac{1}{5}\)

\(\Rightarrow x=\dfrac{22}{25}\) x \(5\)

\(\Rightarrow x=\dfrac{22}{5}\)