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-5r+7(4+2r)=2(4r+8)
We simplify the equation to the form, which is simple to understand
-5r+7(4+2r)=2(4r+8)
Reorder the terms in parentheses
-5r+(+28+14r)=2*(4r+8)
Remove unnecessary parentheses
-5r+28+14r=+2+*(+4r+8+)
Reorder the terms in parentheses
-5r+28+14r=+(+8r+16)
Remove unnecessary parentheses
-5r+28+14r=+8r+16
We move all terms containing r to the left and all other terms to the right.
-5r+14r-8r=+16-28
We simplify left and right side of the equation.
+1r=-12
We divide both sides of the equation by 1 to get r.
r=-12
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