Question

( 3 1/2 + 2y ) . 2 2/3 =  5  1/3

 

Answer 1

\(\left(3\dfrac{1}{2}+2y\right).2\dfrac{2}{3}=5\dfrac{1}{3}\)

<=> \(\left(\dfrac{7}{2}+2y\right).\dfrac{8}{3}=\dfrac{16}{3}\)

<=> \(\dfrac{7}{2}+2y=\dfrac{1}{2}\)

<=> 2y = -3

<=> y = \(\dfrac{-3}{2}\)

(Lưu ý: nếu bn muốn đánh \(a\dfrac{b}{c}\) mà ko viết đc thì bn nên viết \(a+\dfrac{b}{c}\) vì \(a+\dfrac{b}{c}=a\dfrac{b}{c}\) nha.)

Answer 2

\(\left(2y+\dfrac{7}{2}\right)\cdot\dfrac{8}{3}=\dfrac{16}{3}\)

\(\Leftrightarrow2y=2-\dfrac{7}{2}=-\dfrac{3}{2}\)

hay \(y=-\dfrac{3}{4}\)