Question

Quanto é 2/5 + 7 /15

Answer 1

2/5 + 7/15 =       mmc 5, 15 = 15

6/15 + 7/15  = 13/15

5-15|3

5 -5|5
  1          3 * 5 = 15

Answer 2

2/5 +7/15=
Primeiro acha o mmc de 5 e 15
 
5,15/3
5.5/5
1,1
m.m.c=3.5=15

2/5+7/15=
6/15 +7/15=
13/15

R- 13/15