Respuestas

2013-07-11T21:50:20+02:00
Planteamos la ecuación:

8 x - 4 + 3 x = 7 x + x +14

11 x - 4 = 8 x + 14

11 x - 8 x = 14 + 4

3 x = 18

x = 18 / 3 = 6
2013-07-11T22:10:41+02:00
8x + 3x -7x -x= 14 + 4
11x - 8x = 18
3x = 18
X = 18/3 = 6
X= 6