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-6(7r+2)-(8r+7)-6r+9=0
We simplify the equation to the form, which is simple to understand
-6(7r+2)-(8r+7)-6r+9=0
Reorder the terms in parentheses
+(-42r-12)-(8r+7)-6r+9=0
Remove unnecessary parentheses
-42r-12-(+8r+7+)-6r+9=0
Remove unnecessary parentheses
-42r-12-8r-7-6r+9=0
We move all terms containing r to the left and all other terms to the right.
-42r-8r-6r=0+12+7-9
We simplify left and right side of the equation.
-56r=+10
We divide both sides of the equation by -56 to get r.
r=-0.178571428571
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