3r-6(1+3r)=-81

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Solution for 3r-6(1+3r)=-81 equation:


3r-6(1+3r)=-81

We simplify the equation to the form, which is simple to understand 
3r-6(1+3r)=-81

Reorder the terms in parentheses
3r+(-6-18r)=-81

Remove unnecessary parentheses
+3r-6-18r=-81

We move all terms containing r to the left and all other terms to the right. 
+3r-18r=-81+6

We simplify left and right side of the equation. 
-15r=-75

We divide both sides of the equation by -15 to get r. 
r=5

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