$\frac{26}{7}$ x $\frac{11}{3}$ - $\frac{26}{7}$ x $\frac{2}{3}$ - $\frac{6}{3}$ x $\frac{26}{7}$
= $\frac{26}{7}$ x ($\frac{11}{3}$ - $\frac{2}{3}$ - $\frac{6}{3}$)
= $\frac{26}{7}$ x ($\frac{9}{3}$ - $\frac{6}{3}$)
= $\frac{26}{7}$ x $\frac{3}{3}$
= $\frac{26}{7}$ x 1
= $\frac{26}{7}$
Chúc bn hok tốt !
# Moon