Question

Reduce a común denominador las siguientes fracciones.
ME ES URGENTE 
3 2 7
a) --- --- ---
5 15 30


7 5 9
b) --- --- ---
2 8 20



2 1 7
c) --- --- ---
15 10 30


d) 7 9 7
--- --- ---
2 20 30


e) 3 2 1 7
--- --- --- ---
5 9 4 3


f) 7 1 9 5
--- --- --- ---
3 6 2 12


g) 4 3 2 9 1
--- --- --- --- ---
5 10 15 20 4

Answer 1

a. 18/30 4/30 7/30
b. 140/40 25/40 18/40
c. 4/30 3/30 7/30
d. 210/60 27/60 7/30
e. 324/540 180/540 135/540 1260/540
f. 16/12 2/12 54/12 5/12
g. 48/60 18/60 8/60 27/60 15/60