Respostas

2014-04-25T18:10:19-03:00
27 ! 1/3 de 27 é 9, 9 + 6 = 15 !
2014-04-25T18:10:52-03:00
X/3 +6 = 15
x/3 = 15-6
x/3 = 9
x = 9x3
x = 27
x/3 +6 = 15
x/3 = 15-6
x/3 = 9
x = 9x3
x = 27