Respostas

2013-05-01T15:47:57-03:00

5x - x + 2 = 2 - 3x - 15

4x + 3x = - 15 +2 - 2

7x = - 15

x = - 15/7

7 4 7
2013-05-01T15:53:59-03:00

5x-(x-2)=2-3(x+5)

5x-x+2=2-3x-15

5x-x+3x=2-15-2

8x-x=2-2-15

7x=0-15

7x=-15

x=-15/7

 

espero ter ajudado.

6 4 6