Question

2×+1 =4×+9??????????

Answer 1

2x+1=4x+9
+1-9=4x-2x
-8=2x
-8/2=x
-4=x

Answer 2

2 x +1=4 x +9
2 x- 4 x= 9 - 1
- 2 x = 8
x = _8
     -2  
x = -4