Respostas

2014-06-26T15:30:18-03:00
5x + 15 + 6x - 12 + 30 = 60
11x - 27 = 0
A melhor resposta!
2014-06-26T15:31:08-03:00
5(x+3)+6(x-2)+3=60
5x + 15 + 6x - 12 + 3 = 60
5x + 6x + 15 - 12 + 3 =60
11x + 6 = 60
11x = 60 - 6
11x = 54 
x =  54
      11
x = 4,9     ~> aproximadamente
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