2/3 + 5/7 = 14/21 + 15/21 = 29/21
3 - 1/3 = 9/3 - 1/3 = 8/3
1/3 x 7 = 7/3
8 : 1/3 =8 x 3 = 24
2/3 + 5/7 = 14/21 + 15/21 = 29/21
3 - 1/3 = 9/3 - 1/3 = 8/3
1/3 x 7 = 7/3
8 : 1/3 =8 x 3 = 24 .
\(\dfrac{2}{3}+\dfrac{5}{7}=\dfrac{14+15}{21}=\dfrac{19}{21}\)
\(\dfrac{3}{1}-\dfrac{1}{3}=\dfrac{9-1}{3}=\dfrac{8}{3}\)
\(\dfrac{1}{3}\text{×}\dfrac{7}{1}=\dfrac{7}{3}\)
\(\dfrac{8}{1}:\dfrac{1}{3}=\dfrac{8}{1}\text{×}\dfrac{3}{1}=24\)
2/3 + 5/7 = 14/21 + 15/21 = 29/21
3 - 1/3 = 9/3 - 1/3 = 8/3
1/3 x 7 = 7/3
8 : 1/3 =8 x 3 = 24