Respostas

2014-08-22T08:34:52-03:00
RESOLVENDO:
3X+12=2-10-10X+3
3X+10X=-12 +2 -10+3
13X=-22+5
13X=-17
X=-17/13
2014-08-22T08:40:42-03:00
3x+10x=2-10+3-12 13x=-17 x=-17/13