[ Answer ]
[ Explanation ]
4x - 3 = -12x + 13
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Add 3 To Both Sides
4x - 3 + 3 = -12x + 13 + 3
Simplify
4x = -12x + 16
Add 12x To Both Sides
4x + 12x = 12x + 16 + 12x
Simplify
16x = 16
Divide Both Sides By 16
=
Simplify
X = 1