quynhmeohung1 8/2/2024 7:36:06 AM
a) 5$$\frac{27}{5}$$ + $$\frac{27}{23}$$ + 0,5 - $$\frac{27}{5}$$ + $$\frac{19}{23}$$ b) $$\frac{11}{7}$$ x $$\frac{1}{5}$$ + $$\frac{11}{7}$$ x $$\frac{4}{5}$$ - $$\frac{4}{7}$$ c) $$\frac{2006 × 125 + 1000 }{126 × 2005 - 880}$$