Question

\(\dfrac{0,13}{x}\) = \(\dfrac{9}{42}\)

Answer 1

\(x=\dfrac{0,13.42}{9}=\dfrac{91}{150}\)

Answer 2

`(0,13)/x = 9/42`

`(0,13)/x=3/14`

`0,13 . 14 = 3.x`

`0,52=3x`

`x=13/75`

Answer 3

x.9=0,13.42

x.9=5,46

x=5,46/9

Answer 4

\(\dfrac{0,13}{x}=\dfrac{9}{42}\)\(=\dfrac{0,13x42}{9}\)\(=\dfrac{91}{150}\)

\(x\) là dấu x!