Respostas

2014-08-10T15:21:35-03:00
3x+2 = x-4
3x-x+2=4
2x+2=4
2x=4-2
2x=2
x = 1


1 5 1
me ajuda ne outra
Ta erra Nicolas , veja= 3*1+2= 5 _____________ 1-4= -3 , assim 3x+2 nao seria igual a x-4
2014-08-10T15:39:08-03:00