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-10.6(-8+1.6r)+7.8r=-(r-7.4)
We simplify the equation to the form, which is simple to understand
-10.6(-8+1.6r)+7.8r=-(r-7.4)
Reorder the terms in parentheses
+(+84.8-16.96r)+7.8r=-(r-7.4)
Remove unnecessary parentheses
+84.8-16.96r+7.8r=-(+r-7.4+)
Remove unnecessary parentheses
+84.8-16.96r+7.8r=-1r+7.4
We move all terms containing r to the left and all other terms to the right.
-16.96r+7.8r+1r=+7.4-84.8
We simplify left and right side of the equation.
-8.16r=-77.4
We divide both sides of the equation by -8.16 to get r.
r=9.4852941176471
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