Tolong dibantu ya^^ tentukan nilai x dari: 8 + 3 x = x + 4

8 + 3x = x+4
8-4=x-3x
4=-2x
-2=x

8 + 3x = x + 4
3x – x = 4 – 8
2x = -4
x = -4/2
x = -2