Jawapan

2016-10-19T12:57:37+08:00
10x + 12 = 6x - 8
10x - 6x = - 8 -12
4x= -20
x= -5
2016-10-19T15:15:41+08:00
10x + 12 = 2(3x - 4)
10x + 12 = 6x - 8
10x - 6x = -8 - 12
4x = -20
  x = -20/4
  x = -5