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r/31--626=641
We simplify the equation to the form, which is simple to understand
r/31+626=641
We move all terms containing r to the left and all other terms to the right.
+ 0.032258064516129r=+641-626
We simplify left and right side of the equation.
+ 0.032258064516129r=+15
We divide both sides of the equation by 0.032258064516129 to get r.
r=465
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