Respostas

2014-02-20T19:10:48-03:00
2x-3(4-x)=5+4(2x+1)
2x-12-4x=5+8x+4
-8x+2x-4x=5+4-12
-10x = -3 (-1)
10x = 3
x   =   10/3
1 3 1