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3x+12=3(x+4)+x
We simplify the equation to the form, which is simple to understand
3x+12=3(x+4)+x
Reorder the terms in parentheses
3x+12=+(+3x+12)+x
Remove unnecessary parentheses
+3x+12=+3x+12+x
We move all terms containing x to the left and all other terms to the right.
+3x-3x-1x=+12-12
We simplify left and right side of the equation.
-1x=0
We divide both sides of the equation by -1 to get x.
x=-0
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