Respostas

2013-08-28T17:35:31-03:00
2x+1/2+x-1=6

2x+x= 6-1/2+1

3x=  \frac{12-1+2}{2}

3x=  \frac{13}{2}

3x= 6,5

x=  \frac{6,5}{3}

x= 2,16