Respostas

2014-08-26T11:25:56-03:00
1) 4x+40-2x+10=0 2) 6x+9-4x+4=3 3)6-2x=3x-12+15
2x+50=0 2x=3-13 -2x-3x=3-6
2x=-50 2x=-10 -5x=-3
X=-25 X=-5 X=3/5