Question

Thực hiện các phép tính sau:

a) \(\dfrac{19}{48}-\dfrac{3}{40};\)​

b) \(\dfrac{1}{6}+\dfrac{7}{27}+\dfrac{5}{18}.\)

Answer 1

a)\(\dfrac{19}{48}-\dfrac{3}{40}=\dfrac{95}{240}-\dfrac{18}{240}=\dfrac{77}{240}\)

b)\(\dfrac{1}{6}+\dfrac{7}{27}+\dfrac{5}{18}=\dfrac{9}{54}+\dfrac{14}{54}+\dfrac{15}{54}=\dfrac{38}{54}=\dfrac{19}{27}\)

Answer 2

a) 19/48 - 3/40= 77/240

b) 1/6 + 7/27 + 5/18= 23/54 + 5/18= 19/27

Answer 3

a)\(\dfrac{19}{48}\) - \(\dfrac{3}{40}\)=\(\dfrac{77}{240}\)

b) \(\dfrac{1}{6}\)+\(\dfrac{7}{27}\)+\(\dfrac{5}{18}\)=\(\dfrac{23}{54}\)+\(\dfrac{5}{18}\)=\(\dfrac{19}{27}\)

Answer 4

Giải:

a)19/48-3/10=95/240-72/240=23/240

b)1/6+7/27+5/18=9/54+14/54+15/54=38/54=19/27

Answer 5

Bùi Văn Đạt, Bánh Đậu Xanh, Akai Amuro sai hết rồi! Các cậu thử ấn máy tính đi sẽ ra 23/240 chứ! 

Answer 6

a) \(\dfrac{19}{48}-\dfrac{3}{40}=\dfrac{95}{240}-\dfrac{18}{240}=\dfrac{77}{240}\)

b) \(\dfrac{1}{6}+\dfrac{7}{27}+\dfrac{5}{18}=\dfrac{9}{54}+\dfrac{14}{54}+\dfrac{15}{54}=\dfrac{38}{54}=\dfrac{19}{27}\)