Respostas

2014-02-06T16:29:26-02:00
2(3x-5)-x=10-3x

6x-10-x=10-3x
5x+3x=10+10
8x=20
x=20/8

1 5 1
2014-02-06T16:35:21-02:00
2(3x-5)-x=10-3x

6x -10 -x = 10 -3x
6x -x +3x = 10 +10
8x = 20
x= 20/8
x= 2,5 
1 5 1