-189=-9(r+12)

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Solution for -189=-9(r+12) equation:


-189=-9(r+12)

We simplify the equation to the form, which is simple to understand 
-189=-9(r+12)

Reorder the terms in parentheses
-189=+(-9r-108)

Remove unnecessary parentheses
-189=-9r-108

We move all terms containing r to the left and all other terms to the right. 
+9r=-108+189

We simplify left and right side of the equation. 
+9r=+81

We divide both sides of the equation by 09 to get r. 
r=9

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