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54=-(2x+4)-(12+3)
We simplify the equation to the form, which is simple to understand
54=-(2x+4)-(12+3)
Simplifying terms in parentheses
54=-(2x+4)-(+15)
Remove unnecessary parentheses
54=-2x-4-(+15)
Remove unnecessary parentheses
54=-2x-4-15
We move all terms containing x to the left and all other terms to the right.
+2x=-4-15-54
We simplify left and right side of the equation.
+2x=-73
We divide both sides of the equation by 02 to get x.
x=-36.5
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