Respostas

2014-05-12T16:07:54-03:00
X+ x/3 = 126  (o mmc é 3)
x=126.3/4
x=31,50.3
x=94,50

2014-05-12T16:08:49-03:00
X+x/3=120+6

3x+x=378
    3
4x=378
x=378/4
x=94,50