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2(7-x)=18
We simplify the equation to the form, which is simple to understand
2(7-x)=18
Reorder the terms in parentheses
+(+14-2x)=18
Remove unnecessary parentheses
+14-2x=+18
We move all terms containing x to the left and all other terms to the right.
-2x=+18-14
We simplify left and right side of the equation.
-2x=+4
We divide both sides of the equation by -2 to get x.
x=-2
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