72=-8r

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Solution for 72=-8r equation:


72=-8r

We simplify the equation to the form, which is simple to understand 
72=-8r

We move all terms containing r to the left and all other terms to the right. 
+8r=-72

We simplify left and right side of the equation. 
+8r=-72

We divide both sides of the equation by 08 to get r. 
r=-9

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