Respostas

2014-04-14T16:01:49-03:00
X + 3x +x/2 = 45
(2x + 6x + x)/2 = 45
9x = 90
x =10
2 3 2
2014-04-14T16:02:20-03:00
X+3x+x/2=45
4x+x/2=45
4,5x=45
x=10
5 3 5