13r-r-8r=8

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Solution for 13r-r-8r=8 equation:


13r-r-8r=8

We simplify the equation to the form, which is simple to understand 
13r-r-8r=8

We move all terms containing r to the left and all other terms to the right. 
+13r-1r-8r=+8

We simplify left and right side of the equation. 
+4r=+8

We divide both sides of the equation by 4 to get r. 
r=2

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