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18(3.14)=2 (3.14)r
We simplify the equation to the form, which is simple to understand
18(3.14)=2(3.14)r
Reorder the terms in parentheses
+(+56.52)=2*(3.14)*r
Remove unnecessary parentheses
+56.52=+2+*(+3.14+)+*r
Reorder the terms in parentheses
+56.52=+(+6.28)*r
Reorder the terms in parentheses
+56.52=+(+6.28r)
Remove unnecessary parentheses
+56.52=+6.28r
We move all terms containing r to the left and all other terms to the right.
-6.28r=-56.52
We simplify left and right side of the equation.
-6.28r=-56.52
We divide both sides of the equation by -06.28 to get r.
r=9
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