Question

Bài 4: Thực hiện phép tính

a) \(\dfrac{9}{180}+\dfrac{36}{144}\)

b)  \(\dfrac{28}{49}-\dfrac{15}{60}\)

c) \(\dfrac{26}{39}+\dfrac{65}{169}-\dfrac{3}{5}\)

Answer 1

a) \(\dfrac{3}{10}\)

b) \(\dfrac{9}{28}\)

c) \(\dfrac{88}{195}\)