a) \(\frac{3.21}{14.15}=\frac{3.7.3}{7.2.5.3}=\frac{3}{10}\)
b) \(\frac{49+7.49}{49}=\frac{49+343}{49}=\frac{392}{49}\)
a) \(\frac{3.21}{14.15}\) = \(\frac{3.7.3}{7.2.3.5}\)= \(\frac{3}{10}\)
b) \(\frac{49+7.49}{49}\)= \(\frac{49.\left(7+1\right)}{49}\)= \(\frac{392}{49}\)= 8
Cả 2 đều đúng nhưng chỉ là bn đình ko rút gọn hết thui