-9(9+r)=-198

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Solution for -9(9+r)=-198 equation:


-9 (9+r)=-198

We simplify the equation to the form, which is simple to understand 
-9(9+r)=-198

Reorder the terms in parentheses
+(-81-9r)=-198

Remove unnecessary parentheses
-81-9r=-198

We move all terms containing r to the left and all other terms to the right. 
-9r=-198+81

We simplify left and right side of the equation. 
-9r=-117

We divide both sides of the equation by -9 to get r. 
r=13

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