Answer
$x = 0$
Work Step by Step
$x + 1 = 3x + 1$
$x + 1 -1 = 3x +1 - 1 $
$x = 3x $
$x - 3x= 3x - 3x$
$-2x = 0 $
$-2x \times -\frac{1}{2} = 0 \times -\frac{1}{2} $
$x = 0$
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