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800r+12-7=2r
We simplify the equation to the form, which is simple to understand
800r+12-7=2r
We move all terms containing r to the left and all other terms to the right.
+800r-2r=-12+7
We simplify left and right side of the equation.
+798r=-5
We divide both sides of the equation by 798 to get r.
r=-0.0062656641604
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