a) \(\frac{9}{18}--\frac{7}{12}+\frac{13}{32}=\frac{9}{18}+\frac{7}{12}+\frac{13}{32}=\frac{144}{288}+\frac{168}{288}+\frac{117}{288}=\frac{143}{76}\)
b) \(\frac{5}{-8}\times\frac{14}{23}-\frac{6}{10}=\frac{-35}{92}-\frac{6}{10}=\frac{-175}{460}-\frac{276}{460}=\frac{-451}{460}\)
k đúng cho mình nha