Respostas

  • Usuário do Brainly
2013-08-26T06:14:11-03:00
6(x-3)-9(x-5) = x-1
6x-18-9x+45 = x-1
-3x+27 = x-1
27 = 4x-1
4x = 28
x = 28/4
x = 7