Question

7/5-x=4/21nhân 9/8

Answer 1

\(\frac{7}{5}\)\(-x=\frac{4}{21}\)\(\times\frac{9}{8}\)

\(\frac{7}{5}\)\(-x=\frac{3}{14}\)

             \(x=\frac{7}{5}\)\(-\frac{3}{14}\)

             \(x=\frac{83}{70}\)

Answer 2

\(\frac{7}{5}-x=\frac{4}{21}\times\frac{9}{8}\)

\(\text{​​}\text{​​}\frac{7}{5}-x=\frac{3}{14}\)

             \(x=\frac{7}{5}-\frac{3}{14}\)

             \(x=\frac{83}{70}\)