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54=-(2x+4)-(12+3x)
We simplify the equation to the form, which is simple to understand
54=-(2x+4)-(12+3x)
Remove unnecessary parentheses
54=-2x-4-(12+3x)
Remove unnecessary parentheses
54=-2x-4-12-3x
We move all terms containing x to the left and all other terms to the right.
+2x+3x=-4-12-54
We simplify left and right side of the equation.
+5x=-70
We divide both sides of the equation by 5 to get x.
x=-14
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