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-r=r/20-5
We simplify the equation to the form, which is simple to understand
-r=r/20-5
Simplifying:
-r=0.05r-5
We move all terms containing r to the left and all other terms to the right.
-1r-0.05r=-5
We simplify left and right side of the equation.
-1.05r=-5
We divide both sides of the equation by -1.05 to get r.
r=4.7619047619
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