\(=\dfrac{7}{12}-\dfrac{27}{7}\times\dfrac{7}{18}=\dfrac{7}{12}-\dfrac{27}{18}=\dfrac{7}{12}-\dfrac{3}{2}=-\dfrac{11}{12}\)
Đúng 3
Bình luận (1)
\(=\dfrac{7}{12}-\dfrac{27}{7}\times\dfrac{7}{18}=\dfrac{7}{12}-\dfrac{27}{18}=\dfrac{7}{12}-\dfrac{3}{2}=-\dfrac{11}{12}\)