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x-2(x-2+x+4)=4(4+5)
We simplify the equation to the form, which is simple to understand
x-2(x-2+x+4)=4(4+5)
Reorder the terms in parentheses
x+(-4-4x)=4*(+9)
Remove unnecessary parentheses
+x-4-4x=+4+*(+9+)
Reorder the terms in parentheses
x-4-4x=+(+36)
Remove unnecessary parentheses
+x-4-4x=+36
We move all terms containing x to the left and all other terms to the right.
+1x-4x=+36+4
We simplify left and right side of the equation.
-3x=+40
We divide both sides of the equation by -3 to get x.
x=-13.333333333333
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