Respostas

2014-08-02T00:06:54-03:00
2x+3x=10+7+23+2x
2x+3x-2x=10+7+23
3x=40
x=40/3
x=13,3

2014-08-02T00:07:10-03:00
 2x+3x=10+7+23+2x
5x= 40 + 2x
5x -2x= 40
3x= 40
x=40/3
x=13,33