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-2(6r-8)+7=-7-2(2r+1)
We simplify the equation to the form, which is simple to understand
-2(6r-8)+7=-7-2(2r+1)
Reorder the terms in parentheses
+(-12r+16)+7=-7-2*(2r+1)
Remove unnecessary parentheses
-12r+16+7=-7-2+*(+2r+1+)
Reorder the terms in parentheses
-12r+16+7=-7+(-4r-2)
Remove unnecessary parentheses
-12r+16+7=-7-4r-2
We move all terms containing r to the left and all other terms to the right.
-12r+4r=-7-2-16-7
We simplify left and right side of the equation.
-8r=-32
We divide both sides of the equation by -8 to get r.
r=4
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