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2/1/4-1/2r=-3/4r
We simplify the equation to the form, which is simple to understand
2/1/4-1/2r=-3/4r
We move all terms containing r to the left and all other terms to the right.
+2r-4r=-0.5
We simplify left and right side of the equation.
-2r=-0.5
We divide both sides of the equation by -2 to get r.
r=0.25
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