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3(r-3)+2r=8(r-1)+8
We simplify the equation to the form, which is simple to understand
3(r-3)+2r=8(r-1)+8
Reorder the terms in parentheses
+(+3r-9)+2r=8*(r-1)+8
Remove unnecessary parentheses
+3r-9+2r=+8+*(+r-1+)+8
Reorder the terms in parentheses
+3r-9+2r=+(+8r-8)+8
Remove unnecessary parentheses
+3r-9+2r=+8r-8+8
We move all terms containing r to the left and all other terms to the right.
+3r+2r-8r=-8+8+9
We simplify left and right side of the equation.
-3r=+9
We divide both sides of the equation by -3 to get r.
r=-3
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