r+2r=18

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Solution for r+2r=18 equation:


r+2r=18

We simplify the equation to the form, which is simple to understand 
r+2r=18

We move all terms containing r to the left and all other terms to the right. 
+1r+2r=+18

We simplify left and right side of the equation. 
+3r=+18

We divide both sides of the equation by 3 to get r. 
r=6

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