r=(8-r)2-28

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Solution for r=(8-r)2-28 equation:


r=(8-r)2-28

We simplify the equation to the form, which is simple to understand 
r=(8-r)2-28

Reorder the terms in parentheses
r=(+16-2r)-28

Remove unnecessary parentheses
r=+16-2r-28

We move all terms containing r to the left and all other terms to the right. 
+1r+2r=+16-28

We simplify left and right side of the equation. 
+3r=-12

We divide both sides of the equation by 3 to get r. 
r=-4

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