Rút gọn rồi tính:
a) \(\displaystyle{{16} \over {24}} - {1 \over 3}\) b) \(\displaystyle{4 \over 5} - {{12} \over {60}}\)
a) \(\displaystyle{{16} \over {24}} - {1 \over 3} = {2 \over 3} - {1 \over 3} = {1 \over 3}\)
b) \(\displaystyle{4 \over 5} - {{12} \over {60}} = {4 \over 5} - {1 \over 5} = {3 \over 5}\)
-- Mod Toán lớp 4