r-8=12

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Solution for r-8=12 equation:


r-8=12

We simplify the equation to the form, which is simple to understand 
r-8=12

We move all terms containing r to the left and all other terms to the right. 
+1r=+12+8

We simplify left and right side of the equation. 
+1r=+20

We divide both sides of the equation by 1 to get r. 
r=20

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