Question

Y x 8/9 + Y x 4/7 = 2/3

( Đáp án thôi )

Answer 1

\(\Leftrightarrow y\cdot\dfrac{92}{63}=\dfrac{2}{3}\)

hay y=21/46

Answer 2

\(y=\dfrac{21}{46}\)

Answer 3

2/3 hay 21/46

Answer 4

\(\dfrac{2}{3}\)

Answer 5

` y xx 8/9 + y xx 4/7 =2/3`

` y xx (8/9 + 4/7) = 2/3`

` y xx 92/63 = 2/3`

`y= 2/3 : 92/63`

`y=21/46`