Respostas

2014-02-03T19:56:08-02:00
35+3=5x12
38=60x
60x=38
x=38/60
x=0,63
2014-02-03T21:27:22-02:00
35+3=5x+12
-5x=12-35-3
-5x=12-38
-5x=-26     (-1)
5x=26
x=26/5