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3(2-x)+x=13
We simplify the equation to the form, which is simple to understand
3(2-x)+x=13
Reorder the terms in parentheses
+(+6-3x)+x=13
Remove unnecessary parentheses
+6-3x+x=+13
We move all terms containing x to the left and all other terms to the right.
-3x+1x=+13-6
We simplify left and right side of the equation.
-2x=+7
We divide both sides of the equation by -2 to get x.
x=-3.5
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