12=-4+4/5r

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Solution for 12=-4+4/5r equation:


12=-4+4/5r

We simplify the equation to the form, which is simple to understand 
12=-4+4/5r

We move all terms containing r to the left and all other terms to the right. 
-5r=-4-12

We simplify left and right side of the equation. 
-5r=-16

We divide both sides of the equation by -05 to get r. 
r=3.2

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