Question

tìm x

17/2 : x = 5

x-3/8 =2+1/4

Answer 1

`17/2 \div x=5`

`x=17/2 \div 5`

`x=17/10 = 1,7`

`----`

`x-3/8=2+1/4`

`x-3/8=9/4`

`x=9/4+3/8`

`x=21/8`

`\color{blue}\text {#DuyNam}`

Answer 2

\(\dfrac{17}{2}:x=5\)

\(x=\dfrac{17}{2}:5=\dfrac{17}{2}\times\dfrac{1}{5}\)

\(x=\dfrac{17}{10}\)

_____________________________

\(x-\dfrac{3}{8}=2+\dfrac{1}{4}\) \(=\dfrac{8}{4}+\dfrac{1}{4}\)

\(x-\dfrac{3}{8}=\dfrac{9}{4}\)

\(x=\dfrac{9}{4}+\dfrac{3}{8}=\dfrac{18}{8}+\dfrac{3}{8}\)

\(x=\dfrac{21}{8}\)

Answer 3

`17/2:x=5`

`x=17/2:5`

`x=17/10`

Vậy `x=17/10`

___________________

`x-3/8=2+1/4`

`x-3/8=9/4`

`x=9/4+3/8`

`x=21/8`

Vậy `x=21/8`

`@Nae`