Question

Resolva :
A)12/5+4/2= B)5/12+8/3-1/4

URGENTEEE

Answer 1

2/5 + 4/2 =
mmc. entre 5 e 2 

5-2|2
5-1|5
1-1       2* 5 = 10

4/10+ 20/10 = 24/10 simplificando por 2 = 12/5

5/12 +8/3 -1/4

mmc 

12-3-4|2
 6-3 -2|2
3 -3-1|3
1-1            2² * 3   = 12

12/12 + 32/12- 3/12 = 39/12  simplificando por 3   13/4