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144=-12(x+15)
We simplify the equation to the form, which is simple to understand
144=-12(x+15)
Reorder the terms in parentheses
144=+(-12x-180)
Remove unnecessary parentheses
+144=-12x-180
We move all terms containing x to the left and all other terms to the right.
+12x=-180-144
We simplify left and right side of the equation.
+12x=-324
We divide both sides of the equation by 012 to get x.
x=-27
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