Respostas

2014-06-18T08:03:27-03:00
[12x-21]:3+6x+11 algebra

[12x - 21] : 3 + 6x + 11

  12x - 21
[-------------]    + 6x +11
     3


 12x - 21 : 3
[---------------- ] + 6x + 11
       3     : 3

 4x - 7
[--------]         + 6x + 11
    1

4x - 7 + 6x + 11

4x + 6x - 7 + 11
10x + 4 = 0
10x = - 4
x = -4/10

x = -2/5
  • Usuário do Brainly
2014-06-18T08:31:21-03:00
[12x - 21]/3 + 6x + 11 = 0
4x - 7 + 6x + 11 = 0
4x + 6x = - 11 + 7
10x = - 4
x = - 4/10
x = - 2/5