Question

tính giá trị biểu thức

51/60 x 12/17 : 3/10

5/12 : 7/4 - 25/18 : 35/6

Answer 1

51/60 x 12/17 : 3/10= 51/60 x 12/17 x 10/3 = 6120/3060 = 2

5/12 : 7/4 - 25/18 : 35/6 = 5/12 x 4/7 - 25/18 x 6/35 = 5/21 - 5/21 = 0

Answer 2

a)\(=\dfrac{51}{60}\times\dfrac{12}{17}\times\dfrac{10}{3}=\dfrac{6120}{3060}=2\)

b)\(=\dfrac{4}{7}\times\dfrac{7}{4}-\dfrac{25}{18}\times\dfrac{6}{35}=\dfrac{5}{21}-\dfrac{5}{21}=0\)