-9-3(-1+2r)=-18

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Solution for -9-3(-1+2r)=-18 equation:


-9-3(-1+2r)=-18

We simplify the equation to the form, which is simple to understand 
-9-3(-1+2r)=-18

Reorder the terms in parentheses
-9+(+3-6r)=-18

Remove unnecessary parentheses
-9+3-6r=-18

We move all terms containing r to the left and all other terms to the right. 
-6r=-18+9-3

We simplify left and right side of the equation. 
-6r=-12

We divide both sides of the equation by -6 to get r. 
r=2

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