Jawabanmu

2014-06-01T19:23:31+07:00
X+5 =3x-7
x - 3x = -7-5
-2x = -12
x =  \frac{-12}{-2}
x = 6
2014-06-01T19:23:31+07:00
X+5 = 3x-7
x-3x = -7-5
-2x = = -12
x = -12/-2 = 6

Jadi x = 6