\(\frac{x}{3}=\frac{2}{3}-\frac{1}{7}\)
\(\Leftrightarrow\frac{x}{3}=\frac{11}{21}\)
\(\Leftrightarrow21x=33\)
\(\Leftrightarrow x=\frac{33}{21}=\frac{11}{7}\)
\(\frac{x}{3}=\frac{11}{21}\)
=>x.21=33
=>x=\(\frac{33}{21}\)
\(\frac{x}{3}=\frac{2}{3}+\left(-\frac{1}{7}\right)\)
\(\frac{x}{3}=\frac{11}{21}\)
\(x.21=33\)
\(x=\frac{11}{7}\)
\(\frac{x}{3}=\frac{2}{3}+\left(-\frac{1}{7}\right)\)
\(\Leftrightarrow\frac{x}{3}=\frac{11}{21}\)
\(\Leftrightarrow x.21=33\)
\(\Leftrightarrow x=\frac{11}{7}\)
Vậy \(x=\frac{11}{7}\)
\(\frac{x}{3}=\frac{2}{3}+-\frac{1}{7}\)
\(\Leftrightarrow\frac{x}{3}=\frac{11}{21}\)
Bạn tự làm tiếp nhé~~
