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-r=-4r+2
We simplify the equation to the form, which is simple to understand
-r=-4r+2
We move all terms containing r to the left and all other terms to the right.
-1r+4r=+2
We simplify left and right side of the equation.
+3r=+2
We divide both sides of the equation by 3 to get r.
r=0.666666666667
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