Question

19/2-7/2:[x+1/3]=2/3

 

Answer 1

19:2 trừ 7:2 bằng 6 

6 chia 2:3 bằng 9

ta có 

x cộng 1:3 bằng 9

9 trừ 1:3 bằng 26:3

Answer 2

\(\frac{19}{2}-\frac{7}{2}:\left(\frac{x+1}{3}\right)=\frac{2}{3}\)\(\Leftrightarrow\frac{7}{2}:\left(x+\frac{1}{3}\right)=\frac{19}{2}-\frac{2}{3}=\frac{53}{6}\)\(\Leftrightarrow x+\frac{1}{3}=\frac{7}{2}\div\frac{53}{6}=\frac{21}{53}\)

\(\Leftrightarrow x=\frac{21}{53}-\frac{1}{3}=\frac{10}{159}\)