3r+(-9r)=

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Solution for 3r+(-9r)= equation:


3r+(-9r)=0

We simplify the equation to the form, which is simple to understand 
3r+(-9r)=0

Remove unnecessary parentheses
+3r-9r=0

We move all terms containing r to the left and all other terms to the right. 
+3r-9r=0

We simplify left and right side of the equation. 
-6r=0

We divide both sides of the equation by -6 to get r. 
r=-0

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