80-r=-11

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Solution for 80-r=-11 equation:


80-r=-11

We simplify the equation to the form, which is simple to understand 
80-r=-11

We move all terms containing r to the left and all other terms to the right. 
-1r=-11-80

We simplify left and right side of the equation. 
-1r=-91

We divide both sides of the equation by -1 to get r. 
r=91

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