1.)3 1/2 / 4 3/8

$7\dfrac{2}{9}\div \dfrac{5}{9}\\=\dfrac{65}{9}\div\dfrac{5}{9}=\dfrac{65\div 5}{9\div 9}=13$

$\dfrac{3\frac{1}{2}}{4\frac{3}{8}}$

$=\frac{7}{2}\div \frac{35}{8}\\ = \frac{7}{2}\times \frac{8}{35}\\ =\frac{4}{5}$

1) 3 1/2 / 4 3/8

= 7/3 / 35/8

7/3 * 8/35

(7*8)/(3*35)

2) 7 3/10 / 5 2/5

= 73/10 / 27/5

73/10 * 5/27

(73*5)/(10*27)

3) 7 2/9 /5/9

= 65/9 / 5/9

65/9 * 9/5

(65*9)/(9*5)

4) 9 6/7 / 2 2/7

= 69/7 / 16/7

(69*7)/(7*16)

5)7 8/9 / 3 2/2

= 71/9 / 8/2

(71*2)/(9*8)

$7\frac{3}{10}\div 5\frac{2}{5}$

$= \frac{37}{10}\div \frac{27}{5}\\ =\frac{37}{10}\times \frac{5}{27}\\ =\frac{37}{54}$

max wong thxs

6) 18/ 9 1/4

18/ 37/4

(18*4)/37

7)2 7/9 / 11 2/3

25/9 / 35/3

(25*3)/(9*35)

thxs guys you guys are both good

$9\dfrac{6}{7}\div 2\dfrac{2}{7}\\ =\dfrac{69}{7}\div\dfrac{16}{7}\\ =\dfrac{69}{7}\times\dfrac{7}{16}\\ =\dfrac{69}{16}\\ =4\dfrac{5}{16}$

$7\dfrac{8}{9}\div3\dfrac{2}{3}\\ =\dfrac{71}{9}\div\dfrac{11}{3}\\ =\dfrac{71}{9}\times \dfrac{3}{11}\\=\dfrac{71}{33}\\=2\dfrac{5}{33}$

$18\div 9\dfrac{1}{4}\\ =\dfrac{72}{4}\div\dfrac{37}{4}\\ =\dfrac{72}{37}\\ =1\dfrac{35}{37}$

$2\dfrac{7}{9}\div11\dfrac{2}{3}\\ =\dfrac{25}{9}\div\dfrac{35}{3}\\ =\dfrac{25}{9}\times \dfrac{3}{35}\\ =\dfrac{5}{21}$