13(d+9)=-12

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Solution for 1\3(d+9)=-12 equation:


1\3(d+9)=-12

We simplify the equation to the form, which is simple to understand 
1\3(d+9)=-12

Reorder the terms in parentheses
+(+1d+9)=-12

Remove unnecessary parentheses
+1d+9=-12

We move all terms containing d to the left and all other terms to the right. 
+1d=-12-9

We simplify left and right side of the equation. 
+1d=-21

We divide both sides of the equation by 1 to get d. 
d=-21

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