-3r-2.5-8r=18.5

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Solution for -3r-2.5-8r=18.5 equation:


-3r-2.5-8r=18.5

We simplify the equation to the form, which is simple to understand 
-3r-2.5-8r=18.5

We move all terms containing r to the left and all other terms to the right. 
-3r-8r=+18.5+2.5

We simplify left and right side of the equation. 
-11r=+21

We divide both sides of the equation by -11 to get r. 
r=-1.90909090909

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