Question

\(x\) x \(\dfrac{1}{5}\) = 1 - \(\dfrac{2}{3}\)

\(x\) : \(\dfrac{3}{4}\) = ( \(\dfrac{2}{3}\) + \(\dfrac{1}{3}\) ) : \(\dfrac{3}{4}\)

Answer 1

`x xx 1/5 =1-2/3`

`=> x xx 1/5= 3/3-2/3`

`=> x xx 1/5= 1/3`

`=>x=1/3 :1/5`

`=>x=1/3 xx 5`

`=>x=5/3`

Vậy `x=5/3`

__

`x : 3/4 = (2/3+1/3) : 3/4`

`=> x : 3/4 = 3/3 : 3/4`

`=> x : 3/4 = 1 xx 4/3`

`=> x: 3/4 =4/3`

`=> x= 4/3 xx 3/4`

`=> x= 12/12=1`

Vậy `x=1`

Answer 2

\(x\times\dfrac{1}{5}=1-\dfrac{2}{3}\)

\(x\times\dfrac{1}{5}=\dfrac{3}{3}-\dfrac{2}{3}\)

\(x\times\dfrac{1}{5}=\dfrac{1}{3}\)

\(x=\dfrac{1}{3}:\dfrac{1}{5}\)

\(x=\dfrac{1}{3}\times5=\dfrac{5}{3}\)

\(Vậy:x=\dfrac{5}{3}\)

\(x:\dfrac{3}{4}=\left(\dfrac{2}{3}+\dfrac{1}{3}\right):\dfrac{3}{4}\)

\(x:\dfrac{3}{4}=1:\dfrac{3}{4}\)

\(x=1\)

\(Vậy:x=1\)

#Toru