Jawabanmu

2014-03-26T19:35:12+07:00
5x + 19 = 2x + 7
5x - 2x = 7 - 19
3x = -12
x = -4 atau p

= p + 11
= -4 + 11
= 7


Semoga membantu :)
2014-03-26T22:25:14+07:00
5x + 19 = 2x + 7
5x - 2x   = 7 - 19
      3x    = -12
      x      = -12 / 3
     x       = -4
    p        = -4
            *p+11= -4 + 11= 7