Question

\(\dfrac{9}{2}\)+y=\(\dfrac{2}{9}\)

(phải ghi rõ)

 

Answer 1

y = 2/9 - 9/2

y = -77/18

Answer 2

\(y=\dfrac{2}{9}-\dfrac{9}{2}=-\dfrac{77}{18}\)

Answer 3

\(\dfrac{9}{2}+y=\dfrac{2}{9}\)

\(\Leftrightarrow y=\dfrac{2}{9}-\dfrac{9}{2}\)

\(\Leftrightarrow y=\dfrac{2\times2-9\times9}{18}=\dfrac{4-81}{18}=-\dfrac{77}{18}\)

Answer 4

9/2   + y = 2/9

           y = 2/9 - 9/2

          y=77/18

Answer 5

y = -77/18

Answer 6

y = \(\dfrac{2}{9}-\dfrac{9}{2}\)

y = \(\dfrac{-77}{18}\)

Answer 7

y = 2/9 - 9/2

y = -77/18