Respuestas

2013-07-04T01:05:37+02:00
2013-07-04T01:11:59+02:00
8x - 3x = 35
5x = 35
x = 7

x (7 - 2) + 11 = 16
x5 + 11 = 16
x16 = 16
x = 1

2 (x + 2x) - 3 = 21
2 (3x) - 3 = 21
6x - 3 = 21
6x = 24
x = 4