\(a.x+\frac{7}{12}=\frac{17}{18}-\frac{1}{9}\) b) \(\frac{29}{30}-\left(\frac{13}{23}+x\right)=\frac{7}{69}\)
\(x+\frac{7}{12}=\frac{5}{6}\) \(\left(\frac{13}{23}+x\right)=\frac{29}{30}-\frac{7}{69}\)
\(x=\frac{5}{6}-\frac{7}{12}\) \(\left(\frac{13}{23}+x\right)=\frac{199}{230}\)
\(x=\frac{1}{4}\) \(x=\frac{199}{230}-\frac{13}{23}\)
VẬY \(x=\frac{1}{4}\) \(x=\frac{3}{10}\)
VẬY..............









