Question

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

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

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

Ghi rõ các bước 

 

Answer 1

158/13

1/6

22/21

Answer 2

\(\dfrac{2}{13}x12=\dfrac{24}{13}\)

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

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

Answer 3

24/13

1/6

22/21

Answer 4

\(\dfrac{2}{13}\times12=\dfrac{2\times12}{13}=\dfrac{24}{13}\)

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

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

Answer 5

^{_{\(\dfrac{2}{13}\times12=\dfrac{2\times12}{13\times1}=\dfrac{24}{13}\)}}

 

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

 

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