Respostas

2013-09-19T17:30:05-03:00
X+2      +    X-1 =6
3                     2
Multiplicando cruzado, ou tire o mmc, temos:
2x+4+3x-3 = 6
2x+3x = 6+3-4
5x = 5
x = 5/5
x = 1