Jawabanmu

2014-02-10T18:19:36+07:00
4x+7 = x-2
4x - x = -2 - 7
3x = -9
x = -9/3
x = -3
2014-02-10T18:19:52+07:00
4x + 7 = x - 2
4x - x = -2 - 7 
3x = -9
x = -3