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12+3x=2(4-x)
We simplify the equation to the form, which is simple to understand
12+3x=2(4-x)
Reorder the terms in parentheses
12+3x=+(+8-2x)
Remove unnecessary parentheses
+12+3x=+8-2x
We move all terms containing x to the left and all other terms to the right.
+3x+2x=+8-12
We simplify left and right side of the equation.
+5x=-4
We divide both sides of the equation by 5 to get x.
x=-0.8
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