Question

X - 3 = 5               2 x X = 2               2 : X = 1              X : 5 = 22

      _    _               _          _               _          _                   _

      2     6              5          3               5          3                  11

 

Giúp mình ạ

Answer 1

a. \(x-\dfrac{3}{2}=\dfrac{5}{6}\)

\(x=\dfrac{5}{6}+\dfrac{3}{2}\)

\(x=\dfrac{14}{6}=\dfrac{7}{3}\)

Answer 2

b. \(\dfrac{2}{5}\) x \(x=\dfrac{2}{3}\)

\(x=\dfrac{2}{3}:\dfrac{2}{5}\)

\(x=\dfrac{2}{3}\) x \(\dfrac{5}{2}\)

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

Answer 3

`x - 3 / 2 = 5 / 6`

`x = 5 / 6 + 3 / 2`

`x = 5 / 6 + 9 / 6`

`x = 14 / 6 = 7 / 3`    Vậy `x = 7 / 3`

_______________________________

`2 / 5 xx x = 2 / 3`

`x = 2 / 3 : 2 / 5`

`x = 2 / 3 . 5 / 2`

`x = 5 / 3`            Vậy `x = 5 / 3`

______________________________

`2 / 5 : x = 1 / 3`

`x = 2 / 5 : 1 / 3`

`x = 2 / 5 . 3`

`x= 6 / 5`            Vậy `x = 6 / 5`

_______________________________

`x : 5 / 11 = 22`

`x = 22 . 5 / 11`

`x = 10`                 Vậy ` x = 10`

Answer 4

c. \(\dfrac{2}{5}:x=\dfrac{1}{3}\)

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

\(x=\dfrac{2}{5}\) x \(3\)

\(x=\dfrac{6}{5}\)

Answer 5

d. \(x:\dfrac{5}{11}=22\)

\(x=22\) x \(\dfrac{5}{11}\)

\(x=10\)

Answer 6

\(x-\dfrac{3}{2}=\dfrac{5}{6}\)

\(x=\dfrac{5}{6}+\dfrac{3}{2}\)

\(x=\dfrac{14}{6}=\dfrac{7}{3}\)

==================

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

\(x=\dfrac{2}{3}:\dfrac{2}{5}\)

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

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

===============

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

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

\(x=\dfrac{2}{5}\times3\)

\(x=\dfrac{6}{5}\)

================

\(x:\dfrac{5}{11}=22\)

\(x=22\times\dfrac{5}{11}\)

\(x=\dfrac{110}{11}\)

 

\(x=10\)