Respostas

2013-11-27T11:28:15-02:00
3x +    x = 52
          4                         mmc = 4

12x + x = 208
13x = 208
x = 208/13
x = 16

2013-11-27T12:10:56-02:00
3x + x/4 = 52
12x + x = 52
13x = 52
x = 52/13
x = 4