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1.10 (2 3.14 r) = 2 3.14 (r+12)
We simplify the equation to the form, which is simple to understand
1.10(23.14r)=23.14(r+12)
Reorder the terms in parentheses
+(+25.454r)=23.14*(r+12)
Remove unnecessary parentheses
+25.454r=+23.14+*(+r+12+)
Reorder the terms in parentheses
+25.454r=+(+23.14r+277.68)
Remove unnecessary parentheses
+25.454r=+23.14r+277.68
We move all terms containing r to the left and all other terms to the right.
+25.454r-23.14r=+277.68
We simplify left and right side of the equation.
+2.314r=+277.68
We divide both sides of the equation by 2.314 to get r.
r=120
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