Jawabanmu

2014-06-02T22:01:21+07:00
4x + 7 = x - 2

4x - x = - 2 - 7

3x = - 9

x = -9/3

x = - 3
2014-06-02T22:52:46+07:00
4x + 7 =x-2
7+2 =x-4x
9 = -3x
9/-3 =×
-3 = x
x= -3