Respostas

  • Usuário do Brainly
2013-11-10T17:57:17-02:00
3/4 + 5/6 - 1/2 =
mmc de (4,6,2)
4,6,2/2
2,3,1/2
1,3,1/3
1,1,1

2*2*3 = 12

logo:
12÷4*3 /12+ 12÷6*5 /12 - 12÷2*1 /12 =
3*3 /12 + 2*5 /12 - 6*1 /12 =
9/12 + 10/12 - 6/12 =
19/12 - 6/12 =
13/12
2 5 2
2013-11-10T18:18:34-02:00
3/4+5/6-1/2   mmc=12
  9 + 10 - 6   = 13     
        12            12