Question

efectua las siguientes operaciones
4/9 + 5/12
6/10-8/30
4/11+ 3/14-20/77
4/9+5/8-2/6

Answer 1

Hola,
--> 4/9 + 5/12 = $\frac{16}{36} + \frac{15}{36} = \frac{31}{36}$
--> 6/10-8/30 = $\frac{18}{30} - \frac{8}{30} = \frac{10}{30}= \frac{1}{3}$
--> 4/11+ 3/14-20/77 = $\frac{56}{154} + \frac{33}{154} - \frac{40}{154} = \frac{49}{154} =\frac{7}{22}$
--> 4/9+5/8-2/6 = $\frac{32}{72} + \frac{45}{72} - \frac{24}{72} = \frac{53}{72}$