Question

What is the solution of 1-3x= x + 3 ?

Answer 1

1 - 3x = x + 3    |subtract 1 from both sides

-3x = x + 2     |subtract x from both sides

-4x = 2    |divide both sides by (-4)

x = 2/-4

x = -0.5

Answer 2

1 -3x = x + 3
-1              -1
       
-3x = x + 2
-x     -x
     
-4x = 2
/-4     /-4

x = $\frac{-1}{2}$