Respostas

2014-08-14T09:12:22-03:00
X+3=y
y/3=4
Logo,
y=3.4
y=12

x+3=12
x=12-3
x=9
2014-08-14T09:15:55-03:00
Nº = X
TERCA PARTE = X / 3
X +3
-----    = 4
  3

X + 3= 4 . 3
X + 3 = 12
X = 12 -3
X = 9