calcule a fracoes 2/7+1/7
2/3-1/4 1/5+2/5 7/12+5/18


Resposta :

Resposta:

2/7 + 1/7 = 3/14

2/3 - 1/4 = 1/1

1/5 + 2/5 = 3/10

7/12 + 5/18 = 12/30

espero ter ajudado