Question

\(\dfrac{2}{13}x12=\)

\(1-\dfrac{5}{6}=\)

\(\dfrac{5}{7}+\dfrac{1}{3}=\)

Ghi rõ các bước 

 

Answer 1

Answer 2

\(\dfrac{2}{13}\times12=\dfrac{2}{13}\times\dfrac{12}{1}=\dfrac{24}{13}\)

\(1-\dfrac{5}{6}=\dfrac{1}{1}-\dfrac{5}{6}=\dfrac{6}{6}-\dfrac{5}{6}=\dfrac{1}{6}\)

\(\dfrac{5}{7}+\dfrac{1}{3}=\dfrac{15}{21}+\dfrac{7}{21}=\dfrac{22}{21}\)

Answer 3

2/13 x 12 = 2 x 12/13 = 24/13 

1 - 5/6 = 6/6 - 5/6 = 1/6

5/7 + 1/3 = 15/21 + 7/21 = 22/21

Answer 4

\(\dfrac{2}{13}\times12=\dfrac{2}{13}\times\dfrac{12}{1}=\dfrac{24}{13}\)

\(1-\dfrac{5}{6}=\dfrac{1}{1}-\dfrac{5}{6}=\dfrac{6}{6}-\dfrac{5}{6}=\dfrac{1}{6}\)

\(\dfrac{5}{7}+\dfrac{1}{3}=\dfrac{15}{21}+\dfrac{7}{21}=\dfrac{22}{21}\)