Respostas

  • Usuário do Brainly
2014-07-24T14:54:54-03:00
9-4x-4=x+7-1

-4x-x=6-9+4

-5x=1

5x=-1

x=-1/5

S={ -1/5 }
6 4 6
2014-07-24T15:27:57-03:00