18=r(2)

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Solution for 18=r(2) equation:


18=r(2)

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

Reorder the terms in parentheses
18=+(+2r)

Remove unnecessary parentheses
+18=+2r

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

We simplify left and right side of the equation. 
-2r=-18

We divide both sides of the equation by -02 to get r. 
r=9

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