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-3/2r-15=-2/6r-8
We simplify the equation to the form, which is simple to understand
-3/2r-15=-2/6r-8
We move all terms containing r to the left and all other terms to the right.
+2r-6r=-8+15
We simplify left and right side of the equation.
-4r=+7
We divide both sides of the equation by -4 to get r.
r=-1.75
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