Respostas

2014-08-24T10:54:57-03:00
X + x/2 = 45
MMC
(2x + x)/2 = 90/2
Corta os denominadores
3x = 90
x = 90/3
x = 30
5 4 5
2014-08-24T11:23:27-03:00
Divide 45 por 2 :D
45 : 2 = 9
9 . 5 =
3 4 3