Question

1. Rút gọn phân số sau :

a) \(\frac{28}{36}\)b) \(\frac{-63}{90}\)c) \(\frac{40}{-120}\)

Answer 1

a) \(\frac{28}{36}=\frac{7}{9}\)

b)\(-\frac{63}{90}=-\frac{7}{10}\)

c)\(\frac{40}{-120}=-\frac{1}{3}\)

Answer 2

a) \(\frac{28}{36}=\frac{7}{9}\)

b) \(\frac{-63}{90}=\frac{-7}{10}\)

c) \(\frac{40}{-120}=\frac{1}{-30}\)