Question

Calculeaza:

a)
$\frac{3}{7} \div \frac{5}{4} =$
b)
$\frac{10}{9} \div \frac{15}{21}$

Answer 1

3/7 : 5/4 = 3/7 x 4/5 = 12/35 

10/9 : 15/21 = 10/9 x 21/15 = 14/9

Answer 2

a)  3/7:5/4= 3/7*4/5 =  3*4/7*5 = 12/35

b)  10/9:15/21 = 10/9*21/15 = 10/9*7/5 = 2/9*7 =14/9