Respostas

2013-08-22T21:01:28-03:00
x/3 + x/2 = 7+x/3
2x+ 3x = 2(7+x)/6
2x+3x = 14 + 2x
2x+3x-2x = 14
3x=14
x= 14/3

Prontinho ;)