Respostas

2014-03-24T22:56:33-03:00
9x+9+3x=10
9x+3x=10-9
12x=1
x=12/1
x=12
2014-03-24T23:32:13-03:00
9X + 3X = 10 - 9
12X = 1   , Então  X = 1/10