\(\dfrac{4}{9}\)x\(\dfrac{18}{7}-2\)=\(\dfrac{8}{7}-2\)=\(\dfrac{-6}{7}\)

trẻ trâu bị ngông à

chó hack bộ mày thông minh lắm hay sao mà chửi người ta

\(4+\dfrac{2}{5}=\dfrac{20}{5}+\dfrac{2}{5}=\dfrac{22}{5}\)

\(\dfrac{16}{5}+3=\dfrac{16}{5}+\dfrac{15}{5}=\dfrac{31}{5}\)

\(=\dfrac{14}{9}-\dfrac{5}{9}=\dfrac{9}{9}=1\)

=\(1-\dfrac{2}{5}=\dfrac{5}{5}-\dfrac{2}{5}=\dfrac{3}{5}\)

\(\dfrac{4}{6}:2=\dfrac{4}{6}\)x\(\dfrac{1}{2}=\dfrac{4}{12}=\dfrac{1}{3}\)

2\(-\dfrac{4}{3}\)=\(\dfrac{6}{3}-\dfrac{4}{3}=\dfrac{2}{3}\)

\(\dfrac{7}{20}\)x\(\dfrac{7x2}{20}\)=\(\dfrac{14}{20}=\dfrac{7}{10}\)

\(x\) là nhân nha

em cũng thích tham gia lắm nhưng toàn quên