Question

2/9 + 3/7 +4/7 -2/13 + 7/9

Answer 1

=(3/7+4/7)+(2/9+7/9)-2/13=2-2/13=24/13

Answer 2

= (3/7+4/7) + (2/9+7/9) - 2/13 = 2 - 2/13 = 24/13

Answer 3

\(=\dfrac{2}{9}+\dfrac{7}{9}+\dfrac{3}{7}+\dfrac{4}{7}-\dfrac{2}{13}=1+1+-\dfrac{2}{13}=2+\left(-\dfrac{2}{13}\right)=\dfrac{26}{13}+\left(-\dfrac{2}{13}\right)=\dfrac{24}{13}\)

Answer 4

=(2/9+7/9)+(3/7+4/7)-2/13

=1+1-2/13

=2-2/13

=24/13

Answer 5

\(\dfrac{2}{9}+\dfrac{3}{7}+\dfrac{4}{7}-\dfrac{2}{13}+\dfrac{7}{9}=\left(\dfrac{2}{9}+\dfrac{7}{9}\right)+\left(\dfrac{3}{7}+\dfrac{4}{7}\right)-\dfrac{2}{13}=1+1-\dfrac{2}{13}=2-\dfrac{2}{13}=\dfrac{24}{13}\)

Answer 6

\(\left(\dfrac{2}{9}+\dfrac{7}{9}\right)+\left(\dfrac{3}{7}+\dfrac{4}{7}\right)-\dfrac{2}{13}=\dfrac{9}{9}+\dfrac{7}{7}-\dfrac{2}{13}=1+1-\dfrac{2}{13}=2-\dfrac{2}{13}=\dfrac{26}{13}-\dfrac{2}{13}=\dfrac{24}{13}\)

Answer 7

=24/13

Answer 8

`= 2/9 + 3/7 + 4/7 - 2/13 + 7/9`

`=(2+7)/9 + (3+4)/7 - 2/13`.

`= 1 + 1 - 2/13`

`= 2 - 2/13`.

`= 24/13`.

Answer 9

\(=\left(\dfrac{3}{7}+\dfrac{4}{7}\right)+\left(\dfrac{2}{9}+\dfrac{7}{9}\right)-\dfrac{2}{13}=1+1-\dfrac{2}{13}=2-\dfrac{2}{13}=\dfrac{26}{13}-\dfrac{2}{13}=\dfrac{24}{13}\)

Answer 10

=24/13

Answer 11

24/13

Answer 12

24/13