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40-12=4(x-4)
We simplify the equation to the form, which is simple to understand
40-12=4(x-4)
Reorder the terms in parentheses
40-12=+(+4x-16)
Remove unnecessary parentheses
+40-12=+4x-16
We move all terms containing x to the left and all other terms to the right.
-4x=-16-40+12
We simplify left and right side of the equation.
-4x=-44
We divide both sides of the equation by -04 to get x.
x=11
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