-2(r+9)=-31

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Solution for -2(r+9)=-31 equation:


-2(r+9)=-31

We simplify the equation to the form, which is simple to understand 
-2(r+9)=-31

Reorder the terms in parentheses
+(-2r-18)=-31

Remove unnecessary parentheses
-2r-18=-31

We move all terms containing r to the left and all other terms to the right. 
-2r=-31+18

We simplify left and right side of the equation. 
-2r=-13

We divide both sides of the equation by -2 to get r. 
r=6.5

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