Question

Tính

a) 2/3 + 4/5 = ...........................................................................................................

b) 5/6 - 3/4 = ............................................................................................................

 

Answer 1

a) \(\dfrac{2}{3}+\dfrac{4}{5}=\dfrac{10}{15}+\dfrac{12}{15}=\dfrac{22}{15}\)

b) \(\dfrac{5}{6}-\dfrac{3}{4}=\dfrac{20}{24}-\dfrac{18}{24}=\dfrac{2}{24}=\dfrac{1}{12}\)

Answer 2

\(\dfrac{10}{15}+\dfrac{12}{15}=\dfrac{22}{15}\)

\(\dfrac{20}{24}-\dfrac{18}{24}=\dfrac{1}{12}\)

Answer 3

a) \(\dfrac{2}{3}+\dfrac{4}{5}=\dfrac{10}{15}+\dfrac{12}{15}=\dfrac{22}{15}\)

b) \(\dfrac{5}{6}-\dfrac{3}{4}=\dfrac{10}{12}-\dfrac{9}{12}=\dfrac{1}{12}\)

Answer 4

ko lm duoc minh duoc diem 0

 

Answer 5

nói