Question

\(2x-\frac{3}{7}=6\frac{2}{7}\)       Tìm x.

giúp mình zới!!!khựa khựa 

Answer 1

\(2x-\frac{3}{7}=6\frac{2}{7}\)

\(\Leftrightarrow2x=6\frac{2}{7}+\frac{3}{7}\)

\(\Leftrightarrow2x=6\frac{5}{7}\)

\(\Leftrightarrow2x=\frac{47}{7}\)

\(\Leftrightarrow x=\frac{47}{7}\div2\)

\(\Leftrightarrow x=\frac{47}{14}\)

Answer 2

\(2x-\frac{3}{7}=6\frac{2}{7}\)

\(2x-\frac{3}{7}=6+\frac{2}{7}\)

\(2x=6+\frac{2}{7}+\frac{3}{7}\)

\(2x=6+\frac{5}{7}\)

\(2x=6\frac{5}{7}\)

\(2x=\frac{47}{7}\)

\(x=\frac{47}{14}\)