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-r/4=-2
We simplify the equation to the form, which is simple to understand
-r/4=-2
We move all terms containing r to the left and all other terms to the right.
-0.25r=-2
We simplify left and right side of the equation.
-0.25r=-2
We divide both sides of the equation by -0.25 to get r.
r=8
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