Respostas

2013-11-17T18:15:53-02:00
5x+10-6x+2=12

-1x=12-12

x= 0

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2013-11-17T18:20:04-02:00
5 (x+2)-2(3x-1)=12
5x+10-6x+2=12
5x-6x=12-10-2
-1x=0
x=0
S:[0]
1 5 1