Respuestas

2012-10-30T04:41:10+01:00
2012-10-30T04:41:39+01:00

- (-2x +5) = -2 (x+4) +19

2X-5 = -2X-8 +19

2X-5 = -2X +11

2X+2X =11 + 5

4X  = 16

X = 16/4

X = 4