Jawabanmu

2014-09-07T20:02:25+07:00
4x+12 = 2x + 6
4x - 2x = 6 - 12
2x = -6
x = -6/2
x = -3
2014-09-07T20:10:50+07:00
4x+12=2x+6
4x-2x+12=2x-2x+6
2x+12=6
2x=6+-12
2x= -6
x= -6 : 2
x= -3