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13(x+2)=78
We simplify the equation to the form, which is simple to understand
13(x+2)=78
Reorder the terms in parentheses
+(+13x+26)=78
Remove unnecessary parentheses
+13x+26=+78
We move all terms containing x to the left and all other terms to the right.
+13x=+78-26
We simplify left and right side of the equation.
+13x=+52
We divide both sides of the equation by 13 to get x.
x=4
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