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2(a+3)=28
We simplify the equation to the form, which is simple to understand
2(a+3)=28
Reorder the terms in parentheses
+(+2a+6)=28
Remove unnecessary parentheses
+2a+6=+28
We move all terms containing a to the left and all other terms to the right.
+2a=+28-6
We simplify left and right side of the equation.
+2a=+22
We divide both sides of the equation by 2 to get a.
a=11
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