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4(n+5)+2(n+9)=0
We simplify the equation to the form, which is simple to understand
4(n+5)+2(n+9)=0
Reorder the terms in parentheses
+(+4n+20)+2*(n+9)=0
Remove unnecessary parentheses
+4n+20+2+*(+n+9+)=0
Reorder the terms in parentheses
+4n+20+(+2n+18)=0
Remove unnecessary parentheses
+4n+20+2n+18=0
We move all terms containing n to the left and all other terms to the right.
+4n+2n=0-20-18
We simplify left and right side of the equation.
+6n=-38
We divide both sides of the equation by 6 to get n.
n=-6.33333333333
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