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-6(2r+4)=-84
We simplify the equation to the form, which is simple to understand
-6(2r+4)=-84
Reorder the terms in parentheses
+(-12r-24)=-84
Remove unnecessary parentheses
-12r-24=-84
We move all terms containing r to the left and all other terms to the right.
-12r=-84+24
We simplify left and right side of the equation.
-12r=-60
We divide both sides of the equation by -12 to get r.
r=5
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