r+1=13

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Solution for r+1=13 equation:


r+1=13

We simplify the equation to the form, which is simple to understand 
r+1=13

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

We simplify left and right side of the equation. 
+1r=+12

We divide both sides of the equation by 1 to get r. 
r=12

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