Respostas

2014-03-31T15:15:29-03:00
2x+10-15+3x = 5
5x = 10
x = 2

1 5 1
A melhor resposta!
2014-03-31T15:19:43-03:00
2x+10-3(5-x) = 5
2x+10-15+3x=5
5x+=10-15-5
5x=10 / 5 
x= 2
2 5 2