-r=-9

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Solution for -r=-9 equation:


-r=-9

We simplify the equation to the form, which is simple to understand 
-r=-9

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

We simplify left and right side of the equation. 
-1r=-9

We divide both sides of the equation by -1 to get r. 
r=9

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