giúp mình với , càng nhanh càng tốt
a: \(\dfrac{7}{3}=2,\left(3\right)\)
\(\dfrac{7}{9}=0,\left(7\right)\)
\(\dfrac{4}{9}=0,\left(4\right)\)
\(\dfrac{13}{45}=0,2\left(8\right)\)
b: \(-\dfrac{1}{3}=-0.\left(3\right)\)
\(\dfrac{4}{7}=0,\left(571428\right)\)