Respostas

2014-07-26T17:42:29-03:00
4(x+3)=20
4.x + 3.4 =20
4x+ 12=20
4x= 20 - 12
4x= 8
x= 8\4
x= 2
1 5 1
2014-07-26T18:19:23-03:00
4(x+3)=20
4x + 12 = 20
4x=20-12
4x=8
x=8/4
x= 2