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(20+x)/2=6
We simplify the equation to the form, which is simple to understand
(20+x)/2=6
Reorder the terms in parentheses
(+10 + 0.5x)=6
Remove unnecessary parentheses
+10 + 0.5x=6
We move all terms containing x to the left and all other terms to the right.
+ 0.5x=+6-10
We simplify left and right side of the equation.
+ 0.5x=-4
We divide both sides of the equation by 0.5 to get x.
x=-8
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