-2(r-18)-9=13

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Solution for -2(r-18)-9=13 equation:


-2(r-18)-9=13

We simplify the equation to the form, which is simple to understand 
-2(r-18)-9=13

Reorder the terms in parentheses
+(-2r+36)-9=13

Remove unnecessary parentheses
-2r+36-9=+13

We move all terms containing r to the left and all other terms to the right. 
-2r=+13-36+9

We simplify left and right side of the equation. 
-2r=-14

We divide both sides of the equation by -2 to get r. 
r=7

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