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x+12=2x+3+9(x-3)
We simplify the equation to the form, which is simple to understand
x+12=2x+3+9(x-3)
Reorder the terms in parentheses
x+12=2x+3+(+9x-27)
Remove unnecessary parentheses
+x+12=+2x+3+9x-27
We move all terms containing x to the left and all other terms to the right.
+1x-2x-9x=+3-27-12
We simplify left and right side of the equation.
-10x=-36
We divide both sides of the equation by -10 to get x.
x=3.6
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