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(x+x+7)/2=20
We simplify the equation to the form, which is simple to understand
(x+x+7)/2=20
Simplifying terms in parentheses
(+7+2x)/2=20
Reorder the terms in parentheses
(+3.5+1x)=20
Remove unnecessary parentheses
+3.5+1x=20
We move all terms containing x to the left and all other terms to the right.
+1x=+20-3.5
We simplify left and right side of the equation.
+1x=+16.5
We divide both sides of the equation by 1 to get x.
x=16.5
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