Respuesta :
+7 on both sides to get
5x=8x+21
Then -8x from both sides to get
-3x=21
Then divide 21 by -3
And the answer is -7
So X=-7
5x=8x+21
Then -8x from both sides to get
-3x=21
Then divide 21 by -3
And the answer is -7
So X=-7